I've had a B1 for about a year, and there are a lot of things I love about it, and one thing I hate about it.
It's got great ergonomics, balance, and general handling. The flat ground blade cuts like a freaking razor, and I can get that knife as sharp as any knife I own.
That said, I've had extreme problems with the edge chipping. It chips cutting green bamboo using nothing but hand pressure and extreme care not to scrape or twist the edge. I'm not talking battoning or chopping or anything even remotely abusive. Frankly, the knife I got would be perfect as a flesh-only butchering tool, but that's not really how it's marketed.
I contacted BRKT and they said to send it back and they'll regrind it. I haven't received the new grind yet, but I'm pretty skeptical of the whole deal. The best part of the knife was how well it cut, which I attribute to the grind. I've used a lot of knives and edged woodworking tools, and I understand the inherent fragility of the B1's grind, but frankly I'm not convinced that the steel in my B1 is up to par.
I also have a fallkniven F1, and I'll say flat out that the ergonomics of the Bark River Bravo blow the F1 out of the water. I've seen F1's that have custom handles (which look remarkably like the handles BRKT puts on their knives), and if I was going to do the buying over again that's probably what I'd choose. In my one-to-one comparison, the F1 seems to have much better steel, and the B1 has better ergonomics.
That said, I'm considering one of the Bravo-1's with a better steel, as I really do like the ergonomics. For what it's worth, I ground the thumb-spur off with a dremel tool, and it came off really, really easily. If the cutting edge was tempered similarly to the spine, it's no wonder that the edge fails under routine use.