is it possible to change Rtt_Quality_Reflection on the go?

Is it possible to change the Rtt_Quality_Reflection on the go for a particular SceneNode? I have one very detailed model which really slows everything down so I was hoping I could render to texture at a lower res for the detailed model and high res for everything else.

Anyone know where I can test for the SceneNode and then change the Rtt_Quality_Reflection value temporarily?