I never hear much talk of these in the BC hunting community but they are pretty popular in Alaska for hike/fly in and float hunts.
I bought one of the Alpacka rafts last year (the explorer model). Weighs 6ish lbs all in (with 4pc carbon fiber paddle) and packs down about the size of a solo tent. Pretty sweet for fly in hunts where a lake crossing is needed, turns a shitty bushwack into a leisurely paddle across. I can go from fully packed up, to inflated and pack tied on in under 10 minutes. For the guys who like to do a tour in the mountains, river crossings that used to block your path are not an issue. Break out the raft, ferry across with all your gear, and carry on. Google some of the Alaska sites, guys are floating out an entire ram + gear with no issues & ferrying moose quarters across lakes/rivers.
Did a few of the rivers in Reg 6 last year, they will wind through class 3 water if you can paddle. Class 2 is not an issue. Took it on a fly-in hunt last year and it's pretty frickin handy. Also did the Brown Bear - Swan Lake - Upper Kispiox route with it. Got caught on Swan when it whipped up nasty and with my 80lb dog, 40 lb pack and myself (210 lbs) and it was fine. I got soaked but never worried about losing it. This year I'm getting a spray skirt installed though.
They are very tough considering the light weight. You can fit a thermarest pro-lite in the bottom or cut a cheapy blue foam sleeping pad to fit. Adds flotation and keeps you warmer.
Something to consider for serious backpack hunters or where a raft is needed but space/weight is limited. They are pricey but once you see how useful they are, you'll be hooked.