They look, feel, and ski pretty damn well. The Black one is surprisingly stiff (in a good way), and the liner is doope.
Walk mode is somewhat limited, but pretty comparable to other downhill priority boots.
one weird thing: the BSL's are much shorter than average. I have the 27, and the BSL rings in at 299. In a world where the 27.5 boot reigns supreme in demos, tests, etc., you'll actually have to bring a screwdriver. Kinda nit-picky and not performance related whatsoever, just something i noticed.