Well, I have asked the same question here but with Fornax and the GTI. Good to see that you have the same question. I have not purchased the GTI yet, but I think I will try. To to get away from the polar scope you can mount some kind of spacer with a little hight on the Skytracker and then mount the GTI.
https://www.bhphotovideo.com/c/product/1044142-REG/cambo_99211106_compact_camera_tripod_mount_riser.html
Ridgidness is a factor when you do mount two things together, be sure that everything is a tight fit.
The waste of time is not to do it in my opinion.