Yes, but you'll chop thro' 4 or 5 before you get disillusioned and learn.
I have a number of dwarf angels now, and have kept plenty in the past, and I cannot get these to feed properly, and they invariably die after a few weeks, and I do not think that Potters, lemonpeels are hard fish to keep at all as a reference point. Unless you think you really can do something special then I would avoid them unless the LFS really do have one that eats.
Words of warning
1. TMC are a good wholesaler, but they can't keep a fish like this hanging around working on it to get it to feed. I would assume all the time it's there it's further starved and closer to dying.
2. Putting it in an LFS and showing it a bit of brine or pellets is not likely to get it to feed. Again, every day there is a day close to death.
3. They are normally too big - I like to buy very small Centropyge - way easy to work with. Whenever I see these they are much too big - >5cms for me to be really comfortable with. If I saw a really small one I'd be a lot more motivated.
If it really does eat heartily in the shop, rip their arm off. If it jsut looks ok forget it.