i do realise that vb.net doesn't work on linux, but i can easily do it in another programming language.
To compile the raw animation files (.smd and .qc) into the .mdl files that the game actually loads, the installer uses studiomdl, which comes packaged with tf2. afaik, this has never been ported to linux, nor is the source code available, so unless you can find anthor method to compile mdl files on linux , I don't see a way of getting the viewmodel installer working outside of windows
Spot-on, but to add onto this, as far as I've seen studiomdl is so tightly tied to win32 that it doesn't even work properly in WINE... so, yeah, good luck with that.
There are no other compilers for Source as far as I know. Third party tools like Crowbar are just wrappers for studiomdl when it comes to compiling.