So, i remeber those mods for PD2 that did such things, so I made one for PD:TH, doesn't like as good as in successor because character always hold the gun with both hands, but it's still somewhat neat.
This covers : mac11, stryk, crosskill, brenner so far (might add more in future, but for now I think that those are the only ones that look decent with such viewmodels)

Installation - Unzip into mods

It can be merged with my DOOM viewmodel mod, just be sure not to have 2 different viewmodels for the same gun or else it will surely cause problems.