It's not common, but it's certainly playable.
I checked this a little and in the ending position black has a big advantage. White should have played 6.Nh3 which leads to interesting positions for example after 6...Be7 7.exd5 Bxh3 8.Rxh3 Bxh4+ 9.Ke2.
Is this a common opening? It seems like it might be a bad idea but could go either way.
This is how it went for me.
I think white missed a chance to get his bishop into the game on move 5. Is 4... pd5 workable?
"Note; I'm black. I forgot to flip the board and give pertinent info."