Anybody have any experience with a Riverside Whitewater TC ?

Looks interesting.Like that size range.One thing I do see is the blackwater drain will freeze easily as it is just hanging out the back.
Good luck and check them out well for quality and leaks.

I did a google search, and found a few interesting posts about the campers.

But, only you can look at that one, and compare it to another model, then decide what you want to spend your money on.