I picked up a couple of simple adapters (Mini Display to HDMI & Mini Display to VGA) to toss into my bag so I'm ready for presentations in different environments with unexpected display equipment. Just to be sure, I put them both through the test this morning. I'm pleased to report that it was
really easy to get the Surface Pro to throw PowerPoint up to a variety of different screens & projectors. (In fact, it worked better and faster than the big laptop I've been dragging around... YAY!) I put my presenter's remote dongle into the USB, threw the appropriate adapter into the Mini Display port, and everything else was magic.
I especially like the placement of the Mini Display port on the Surface Pro. It's right at the bottom-right of the screen, which ensures that the weight of an adapter's block isn't tugging at the connector. Great design.
Here are the adapters I used, in case anyone is looking for something similar.
They make one for DVI connections as well: