Peter,
To the costs point - I don't think we have a conversion / legacy issue here. OASIS can advise - but seems like little or no svn activity exists. Those impacted can I'm sure easily migrate forward files themselves.
Plus - regarding infrastructure - standing up the VCS server is same as svn - so I do not foresee any impacts there. Actually if they are transitioning - that makes a good case for implementing VCS once that is complete - and using that as the go forward.
Farrukh can add more - but seems to me at this point this is low hanging fruit.
Thanks, DW