I haven't compared the UV maps for those bodies, so I can't really comment on them working well together, but if you keep the BAB clothing shop installed, doesn't it have equippable hands and feet for purchase? It did back when I was using it. That would at least take care of wrist gaps if you wore a full coverage Bab outfit on a Robert's using character. I don't imagine you'll be able to use any of the skimpy Bab stuff without texture errors, unless you performed some Nifskope-ry.
I see. So, how difficult is this "Nifskope-ry"? For a total newcomer, I mean.
Not that there would probably be that much skimpy gear, actually. But you never know. :angel:
It's annoying, that Bab doesn't have full FCOM compatibility, but has a vast array of awesomeness besides. And that Robert's is quite the opposite.

This is, indeed, why I have stuck with EC for some time.