+1
This gives them an incentive to buy VIP and still allows them to build with confidence on the server.
If this can be implemented, that's be great.
But I don't think I've ever seen a tool PARTIALLY allowed.
So, there might be a challenge in place actually implementing the idea.
-1, as cool as that sounds I know from personal experiences how exploitable that can be, for instance using the climb-swep 2 and the ability to sit on props you can essentially use a very specific comic prop to fly around the map as well as phase through any base. Also other issues like using the phys-gun to get a clan member (or really any player) inside a base without having to raid at all. Props are able to intersect each other without any collision logic while being manipulated by the phys-gun, that same lack of game logic will be applied to the sitting player as well which would open the doors for a whole new method of Fail RP. I know both of these would become big problems because people did it all the time on my old server, especially people just looking to troll.