To be honest, people who have Garry's mod are recommended to get all the important valve games like Half Life 2, Half Life 2: Episode 1, Half Life 2: Episode 2 and Counter Strike: Source before they start going on the game types, since pretty much ALL use content from them games as a starting foundation since they already have the resources. I know it's a pain and people don't have the money for it, but it's a way of showing that you've paid for the content and it has to be done.
I do like the idea of alternative ways though, it really does show how far the server is willing to go to accommodate for these people, this is probably the only RP I've seen so far that does this. I'm impressed.