Change player model material?

Basically, I want to change the player model material to one of the invisible ones upon use of a TTT swep. Is that possible?

EDIT: I found this.
How do I get the player model as a variable in LUA though?

The player model’s material can be changed simply by setting the material of the player entity.


and this works with TTT fine?

As long as the model only uses ONE texture, it will work fine on any gamemode.