I just talked to my DM and he said absolutely it does, and it takes me from an IL 14 to an IL 15 and therefore access to 8th level maneuvers. If I continue to dual-wield, then Girallon Windmill Flesh Rip sounds very, very attractive, especially with a crazy AB like I have. I have three attacks in a full attack, six while dual-wielding, thanks to Bracers of Quick Striking, hit almost all the time, and the rend damage from six consecutive attacks is high enough that I'll really mess up boss monsters when we face them. Of course, I won't get it until 20th level, in which case my BAB progression will be 20/20/10/5/20, so will probably be looking at six landed hits anyway.