Do you have any experience with the Xcelerator stove or is your concern just the lack of a pre-heat tube? In that case, it seems as if the new Primus OmniLite Ti model doesn't have one either and from what I have read and seen, this has not been an issue which is quite surprising considering it was designed to burn liquid fuels unlike the Olicamp Xcelerator that wasn't.. I realize in very cold weather the gas in the canister will condense and turn into a more liquid form and this is the reason you have to invert the canister but I am not sure the target market for this stove, was use in subzero temps.. Just like every product on the market, it was designed for a specific purpose and certain type of customer base. I have a feeling that the customers who buy this will not be melting snow in subzero temps. I am guessing the target market is 3 season Lightweight Backpackers, Small Groups, Gear Junkies, Rock Climbers, Etc. Basically anyone who likes using a remote canister stove but wants something lighter then anything currently available.. There is nothing stable about a pot full of water on a stove that is on top of a canister.. This is where Remote Canister stoves really shine, especially when cooking for more then one person or using larger pots... In this case I think Olicamp hit the nail on the head..
That said, I don't like the general CAUTION without describing what the potential problem is or what people should avoid doing... Its like giving a CAUTION with a Silnylon tarp.. And then forgeting to say, *For Mountaineering use Silnylon tarps would not provide enough protection from the elements and in result you could DIE from Exposure. But for their designed use of 3 season lightweight backpacking, they work great.. With that said, Roger's concern is flipping the canister over in subzero temperatures... Without a pre-heat tube the stove could flare up.. But at the end of the day the stove weighs only 3.5oz, costs $69.95 and fills a huge gap in the remote canister stove market. So while the stove wasn't designed for every situation, I think it still checks alot of boxes and could work great for its target customer base. 3 Season Lightweight Backpackers..