"make them use git" - given that the entire business is built around git, I should hope so. Git isn't the most user-friendly VCS, but why shouldn't a competent designer be able to pick it up? I've even got our designer working with branches.

No doubt that's part of the motivation behind the excellent http://mac.github.com/

I love their philosophy of automating tasks to make them as simple as possible, so that anyone in the company can do them. It's really frustrating and time consuming to play sys admin every time you need to work on or deploy something, especially when you aren't at all a sys admin.