Yes, they will battle for awhile, in most cases it is highly recommended that you do not put two dwarfs in the same set up. But if your like me, I did have two dwarfs, a lemonpeel and a pygmy angel. I bought the lemonpeel and the wife got a flame We QT'd them together for 6 weeks and then separated them. I rearranged my rock work in my tank that way there was no established territories and acclimated the lemonpeel and set her free. They but chased each other for a little bit but then found there homes. the next day I awoke to them standing in line together waiting for the cleaner shrimp to clean them. They did bicker every now and then but nothing major.
right now I have a multi-colored angel and I really miss the bright color of the lemonpeel, considering getting another.
But to answer the original question..... not recommended but doable. I'm gonna get some frowns for this one. Lol)