My current workaround is binding my W key to "cl_fov 110;+forward;" or something like that, but that's less than optimal. Plus, doing many things will reset it (loading a save, pressing or releasing Tab in coop, death)
There's got to be a better way !

It got reset to 90, and popping it in autoexec didn't work either. Autoexec is being run tho. I put sv_use_bendy_model 0 in there and it worked.