Yeh it works well. You do get some print through of the fibres giving a bit of a 'texture' to the surface of the sticker, but it's not normally an issue. 

For identification stickers on the backside of the part, you can again use virtually anything; regular labels work well. For pre-preg you can even just use ordinary paper. I think the surfboard guys use rice paper to avoid any issues of adhesive reacting with polyester or vinyl ester resin, but if you're using epoxy then its easy.