Sandbox, restrict certain player models?

Hiyah FP, a friend and I are setting up a Sandbox server with ULX.
We were wondering if it was possible to restrict certain player models so that only admins can use them.
The models in question are workshop addon models, not stock content.

Thanks in advance!

Read the sticky

Sorry, I thought that was referring to technical issues with Garry’s Mod and such.
If someone could move the thread, I’d appreciate that.