Keeping Peppermint Shrimp in refugium???

[Chromis88]

I have heard that Peppermint Shrimp have been known to occationally pick at corals, but on the bright side can be good at controlling aptasia as well as providing plankton if breeding.

I was curious if it would be smart to keep a pair in a 3 gallon refugium. That way if aptasia shows up them can be temporarily employed in the main tank yet won't be around to bug my corals. I do not, however, want them to detriment my other refugium life such as worms and "bugs."

So I guess my question is whether Peppermint Shrimp feed on "bugs" and worms and if so would 2 in a 3g refugium damage the "bug" and worm population?