As far as the designs go, the styles that insert into the magazine opening are what I'm referring to. You'll note that the bottom of the grip sits flat on the base, which makes the gun point upwards. Aesthetically, the top of the slide should be parallel with the base. That's what would drive me nuts. Too many years in the product design and engineering world, I guess.
If they suit your needs and you are happy with them, then that's great! If they can make money selling those items, then good on them. I won't fault anyone for making money. It's their "engineering" claims that I find suspect. As for commercially available with the logo, you'd have to talk to CZ about that. If you have a friend with a 3d printer, ask them to download the free files and print you up some! I've done a couple of the stands I linked to, and they printed quite well.