Promise, in my FIRST sw fish tank...many, many years ago, when I did little research, I saw that multibarred angel in a book and thought to myself "i have to have it." Well, the next week, my LFS got one in. I asked the LFS to feed him for me, so I could see him eat, and sure enough he did..so I said, "sold." Had him for 2 years, until I took that tank down, to do FW discus for a little while. He was a really neat fish. IMO, if you see one and it is eating, go for it. Once acclimated, their indestructable.
~Adam :happyfish