I didn't make it!
Would I be unable to play on CS:S if I'm VAC banned on regular CS? Got banned for HLamp, and I don't feel like fighting with valve to get unbanned..
I don't think you will be able to play it if your Steam account is banned from online play.
New CD KEY New SteamID.... u can play ! :D Half Life 2 has its own CD KEY to use with the CS:Source.
The CD KEY has never been used before so it isnt banned!