It would be better to play him at DH if you have an AL team. Unless the DH slot is already occupied by a great slugger, in which case you're probably not hurting for another bat in the lineup.
I think a lot of people have skimmed Mike's Rightfielder post and now they think that they can play any catcher reject in RF. Correct me if I'm wrong, Mike, but my understanding is that it's only a good idea to play a catcher in RF if he has a strong arm, he is an excellent (not merely decent) hitter, and you're in the NL, and thus unable to carry a DH.
I've seen a ton of players in my worlds who commit 15-20 minus plays in RF and hit .260. That isn't benefitting your team when you do that.