I have that exact bike rack.
The advantage of that type rack is it allows you to tow and carry bikes on the hitch at the same time. I use mine when pulling a utility trailer with motorcycles on board. I doubt it would work well with a TT or pop up because of interference from the tongue jack and LPG bottles.
With my rack the clamp bolt broke on the first use. The clamp bolt is simply a weak bolt which is bent. I modified mine that now the quick release clamp is eliminated and you have to install/remove a bolt whenever installing/removing the rack. It is less convenient but much sturdier.