The fan and housing does restrict some but nothing to worry about. In motion the fan rotates so air can flow. I don't think it will be an issue but the area under an RT is much more confined than a GS. The fan cools a RT-P at a stand still while idling pretty damm well.
You can outrun a motorcop....but you can't outrun Motorola
When you start loosing your mind over a woman remember this one simple fact.................it's just the hairy end of a gut!!!!!!!!!!!!