I think the 2 is a knife for itself, it is very thick, not the best cutter, but indestructible and probably one of the best knives for batoning out there (at least the best that I've tried yet). If you're like me and love to whittle little stuff, practice featherstick making or other things that require a super sharp and thin edge (especially a scandi grind) you should pack a Mora, a folder or *insert your favorite expensive custom bushcraft knife here*.
I think the 7 would be a better allround and day hike blade, the 2 is so special that I don't really know when to carry it, since I almost always carry a hatchet/small axe when going out into the woods. If I were to be at camp for a few days, I'd pack my hatchet and leave it where the wood is processed, strap the 2 to my belt (remind me to show you guys my homegrown belt carry system for the stock sheath) and split, chop and pry anything that I need to with it. Carrying both around in the woods? That's about 3lbs worth of edged too, plus my Mora neck knife. Too much.
Don't get me wrong, If I were to choose one edged tool to use for a month out in the bush, it'd be the BK-2, because I can hammer it through knotty oak and not think for a second that it's gonna break. If I were to choose two tools, it would be a Mora and my axe. Makes sense to me.