Thanks so much for the awesome replies!
Garrett, to be honest I've mostly been doing OHSs because I kinda just like them. Getting 15 reps at BW is a purely numerological goal - I actually don't do any olympic lifting (heh I kinda just don't like it), so this isn't designed to improve my snatch. At some point down the road I'm sure I'll get obsessed with olympic lifting, but for now I'm happier just working on my basic strength. I'm a bit crazy about having perfect technique, so I think I would die of frustration mixing in power and oly lifting at the same time.
Anyways I think I'll take your advice and work on handstand/FS/BS strength, and throw in OHSs for fun now and then.