SPECIAL NOTES: Stylish Spy will not work on sv_pure 1 servers. :(
So if you join a server and he appears invisible on your screen. Simply open your console and type in "mp_usehwmmodels 1"
What this command does is load up the original Spy, and you may continue playing on that server without any problems.
Simply type in "mpusehwmmodels 0" when you return to a server without svpure 1, and the Styish Spy will return :D