This is a tricky question and I'm not sure how to go about being a proponent of forward thinking/change in a system that is a little over 30 years old (to most middle aged/older scientists).
How can one promote version control ( used correctly it can save significant amounts of time and headaches - just like using tex ! ) amongst a group of people who are largely invariant in their ways.
Personally (call me crazy if you will) I see version control as the next step in producing well formatted documents in a short amount of time -just as the advent of tex did when it was first realized.
However, among peers I see the 'bad habits' (no version control/or poor versioning) of their advisers being imposed on them. They have no desire to change because their adviser does not understand this new technology (ok it is not new at all) and the will not be able to use it. The cycle continues as new students come in are show 'this is how we do it here'.
In order to promote version control it seems there would need to be a huge shift in thinking - does anybody have any ideas about how one could even attempt to begin this shift - or should I not waste my time and just deal with peers (when I'm much older) sticking to what they were taught?