What Powerhouse cab do you have? If you want a 2x12, I'd get a pair of the Subway 12's..or better yet a 115 and a 112. Or you might want a pair of the 210's if you need more output.
I haven't used the Barefaced 212's, but comparing the 112's, the Barefaced cabs are definitely lighter. But they also don't have the output, heft, or bulletproof construction of the Mesa's. They are also very clean, uncolored sounding cabs so they won't sound like your Powerhouse cab at all. But BF cabs are fantastic considering their light weight.
I have a traditional Powerhouse 4x10. But one of the things I like most about it is that the sound is clean and uncolored. Your reply is the first I read indicating that BF cabs' construction are not comparable to Mesa's. Unfortunately, I haven't had the chance to play through one. I keep reading great things but I'm reluctant to drop a grand on a cabinet I've never played through. For me, getting a pair of small cabs defeats the purpose of going ultralight. I have enough gear with my bass, gig bag, mic stand and stage monitor. Not looking for another thing to carry/schlep.

