Good question. I put 4 different miniature species of Orchids in my Pygmy Viv. Luckily they're easily removable, and I haven't put the Brev's in yet. Let me know what you find out, and I'll do some more research as well.
I had orchids in with my bevs for a year and they did just fine. Had to give the bevs to a friend when I moved across country and they still had the orchids in with them and were doing just fine. I've also been told they were fine by a guy working on of the chameleon booths at a reptile show.