I've seen lots of photos of RTT installs using the bed mounted crossbars, but has anyone installed and used a RTT over the R1T cab? Other than aero-drag, is there any reason not to try this? I'm wanting to integrate an awning with the RTT, and concerned that the bed mount RTT will be too low to be able to stand comfortably under the awning. I'm tentatively looking at the iKamper Skycamp 3.0 mini and awning that zips to the tent opening. Anyone have examples or ideas to share on this?