J Mole: So you Brits CAN get some things that Yanks can't. Thanks for the link and I'll keep my eyes open, but that vendor didn't seem to ship outside of the UK.
So I took the little pull saw blade, a Sven saw with a 15-inch blade, did some cutting tests.
1/2" round branch on tree: pullsaw (one stroke), 1 second? Sven saw: 2-3 seconds (hard to start on small stuff)
3/4" round branch on tree: pullsaw: 2 seconds; Sven saw: 3 seconds
1" round branch on tree: pullsaw: 3 seconds; Sven saw: 3 seconds
1.5" round green branch on bench: pullsaw: 6 seconds; Sven saw: 3.5 seconds
1.5" x 1.5" dry on bench: pullsaw: 10 seconds; Sven saw: 6 seconds
2.5" round green branch on bench: pullsaw: couldn't; Sven saw: 15 seconds
2.5" round dry" pullsaw: 15 seconds; Sven saw: 17 seconds
Generally, the pull saw with its smaller kerf and smaller teeth did better on dry wood which was hard to get the Sven Saw started in. The Sven Saw excells as pieces get larger, especially green wood.
I got the pullsaw down to 15 grams and I'm inclined to leave it handleless. If I was cutting a lot, or really going for time, I'd add tape or cushy stuff and bring it up to 18-20 grams.
The Sven Saw was 315 grams. I used a leather glove (100 grams) whenever I used it because I was going for speed. I wouldn't bring the glove BPing, but then I'd slow down on the starting strokes on a push saw. The Little Buck 2G is reported at 109 grams and is clearly superior in weight and size to the storebought version and, as I've posted elsewhere, I'll be buying one.
But for my needs while UL BPing, I'm liking the handleless pullsaw. Personally, I'm using small, dry branches. If I was trailclearing or feeding a wood stove (which we do sometimes at USFS cabins and old trapper's cabin which by tradition are public use), then I'd want the Little Buck. Or my Husqvarna 350.