How and when should D'Antoni use Kurt Thomas against the Mavs

To help us decide, I've listed down the pros and cons of playing KT in this series.

KT should play because:

1) For rebounding purposes.
2) To match up with Diop (or Dampier.)
3) To give Marion, TT or Diaw a rest.
4) Because he's our enforcer (and dampier, theirs).

Why D'Antoni will not play KT:

1) He's not an effective perimiter defender. And Diop and Dampier are not worth guarding, according to D'Antoni.

"I like our team right now. I like the way we're going," he said. "I don't know what kind of shape he's in. Plus, he's not really a Dirk (Nowitzki) guarder. So he'd be guarding a guy that we really don't need to be guarding, Erick Dampier or DeSagana Diop. The best thing Kurt does is shut somebody down. Who's he going to shut down?"

2) Coach would rather use quicker, smaller perimiter players for his run-and-gun offense, to render Diop and Dampier ineffective, like what the Suns did to Yao Ming in the regular season.

3) KT's not a shot-altering/shotblocking presence like Diop.

Any suggestions?