I have teams with many DMC's... and I have used them OOP plenty. As MC would be ok, but some players do better than others OOP. I have one that gets 7 & 8 OOP as a winger! But long term, I couldn't say. I have been meaning to test that a bit with the team I have too many DMCs on this season.
I would agree if you give him MC, that makes him candy on the TL, I have had a couple of those. Got negotiations offers, too. Very handy player to have and extremely easy to sell.