There's nothing more to be gained from them after you unlock the sub weapon from them, right? You just get those moon crystal orbs (or w/e they're called)? I'd like to know so I can stop wasting money on gifts for them.
After getting all the subweapons from them your only purpose is to get better ranks with them and even then that just gets you an extended version of the sexy scenes for A and AAA ranks ... oh and trophies if you're into that. Once you get those and they bore you I guess you can tell the bimbos to get their own damn gifts, Mondo Zappas got fugly monster men to cut down.
happychappy doesn't seem to be a very happy chappy. Perhaps happychappy is so crappy because he missed his little nappy. - Gurn Blanston