I thought this would be a good discussion to add my first BPL post to...
The entire notion that a "backpackable wood stove" is somehow not applicable to "backpacking light" is so unfounded that I almost have to laugh at it. There's a considerable difference between going light, and going minimalist. Obviously if you live in a place where generating heat during minor cold spells is a temporary inconvenience, a wood stove is of little to no use. But, as many of you who've posted here already (especially my fellow Alaskans) understand, the further north you travel, the more you have to deal with the real world....and it's a cold place.
Here in the Interior, most human-powered travelers, whether they are skiing, snowshoeing, fat-biking, pulling a pulk sled or not, if they aren't carrying a wood stove, it's likely only because of the serious weight and bulk...or an abject lack of fuel, as is the case in most places above treeline. With the advent of new stoves that can be conveniently carried in a backpack (as opposed to a pulk which mitigates the weight factor), this allows more people to travel fast & light with the benefit of a warm shelter at night & in the morning.
I'm willing to bet some of you on here have never experienced temperatures much below freezing, let alone sub-zero. If you are an efficient traveler and only experience at worst the low teens or perhaps single digits on a rare occasion, I would argue against using a wood stove because there are methods of maintaining adequate warmth and comfort which preclude it, thus saving you weight even with these UL wood stove options.
If your primary adventure areas are in the northern mid-latitudes (southern boreal forest, i.e. Northern NY, VT, NH, Maine, UP Michigan, Wisconsin, Minnesota, etc.) or high-elevation areas (sub-alpine) around the continental divide that can see temperatures below zero and at the extreme down to -20F, I would argue that a backpackable wood stove will enhance your winter camping experience tremendously, perhaps extending your travel range beyond what you might otherwise consider.
But if you live in the far north (Alaska/Northern Canada) and regularly experience temperatures past -20, -30, and even -40, having a wood stove in these instances is far more than a luxury item. In many cases, it can be a link to life. Can you travel fast & light at -40 without a wood stove? To a point. Check out Josh Spice's blog (http://www.joshspice.com/2012/01/still-cold.html) for more info on that...but take heed to the fact that the fun factor really starts to take a nosedive once you hit -30. That really is the temperature where, when you lose heat, it takes considerably more bodily work to regain that heat (hence the obvious need for more/better insulation, VBLs, etc.). The further the mercury plummets, the harder you have to work. Eventually, you will reach a point where, once the heat is lost, the only way to properly regain it is through an exterior source. There's no way around it...and that's where the ultralight wood stove in your pack saves the day. Knowing how insidious the cold can be, I wouldn't chance much past -40. Weird stuff starts to physically happen at that temperature, the magic point where Fahrenheit and Celsius meet: no form of water can stay in the air, due to it being the freezing point of the molecule on its own, without attachment to another particle; durable plastics become brittle; nylon crunches when bent; even metal begins to weaken. It's a good time to stay in...and if you're out with that UL wood stove, your only priority might be to gather more fuel.
Now...some of you might say, why bother exploring in these temperatures? I say, why not? If there's technology available that makes going faster, lighter and further in extreme cold less stressful and considerably safer, I am all for it. It opens up human-powered winter travel in Alaska's Interior as a more viable option in the months of December, January, and February, although lack of daylight will always be a limiting factor in the enjoyment for many.
I forgot to mention my thoughts on the Sibling stove featured in this article. There is one serious problem with a bottomless stove, and that is snow depth. As evidenced, a few inches or perhaps just a foot can be managed sufficiently by shoveling it away...but often when camping on snow, the more efficient preparation is to pack down the snow to create a level surface. In that case, with potentially feet of snow separating your shelter floorspace from the ground, a stove like the Sibling would compromise it's own base by melting the snow beneath it.