Well I tried out my new Rdome today. As others have noted, it will take a little work to make it fit right. The part that goes in the rail does extend beyond the track on the Rpod, my theory is that it would work best to have that excess at the rear, and wrap the material up and over the back side, and attach the suction hooks onto the back, rather than the side wall. That gives you a bit more head room at the door. Not easy to set up, one person, with wind blowing. It will work better when staked to the ground, for sure.
I have a feeling I'm going to be using my Pahaque awning a lot more than the Rdome!
Disappointed to see "made in China", for what I paid, I could buy 2 or 3 good quality stand alone 10x10 or 12x12 canopies; walmart.com has a 10x12 Coleman hex screened canopy/gazebo for $134....!
Some pics: