Pastel Textures - Golden Pastel Ground on Yupo

I recently received a sample of Golden's Pastel Ground. This is similar to the Golden Fine Pumice Gel which I like a lot. I have applied the Pastel Ground to a few surfaces and am giving it a try to see which one I like best. The first surface I applied the ground to may be unusual, as it generally is used for watercolors - Yupo synthetic paper of 100% polypropylene. I wanted to try this because it was very stable and flat. I'm not sure if this ground felt much different than the gel, since I used this on Yupo instead of paper or board.

Path, approx 8 x 10, pastel on prepared Yupo