My tank used to have tonnes of stomatella snails until I had cleaner shrimp and peppermints. Basically the little bugs (sorry Bob I still call them bugs
) are hungry little buggers. They pretty much wiped out my main tank of stomatella. I would still have stomatella in the sump and whatnot (where there were no predators). But whether they'll develop a taste is not a given (I would think). So, hit and miss.
Also I should mention that over the last .. um .. 7 (?) years in the hobby, I've tried buying peppermints on at least 3 occasions with the specific intent for them to munch on aiptasia, and in each case they never did. I found them interesting in their own right and I don't mind having them, but they have never fulfilled the purpose of "aiptasia muncher" for me (unlike the countless stories of others). I guess I got fussy shrimp. "Ew aiptasia I'm not eating that!" They didn't have mothers that forced them to eat their vegetables .. er .. aiptasia... I guess.
Just my $0.02 ...
Your mileage may vary and dealer may sell for less.