/prog/ comments on SCCS

I know there are better systems (SVN, Mercurial, GIT, etc), but we are forced to keep Unix source files on Visual Source Safe (yes, my bosses are Microsoft shitheads)

I only have SCCS available on our Solaris machine, without any chance of installing new software.

Being that SCCS is sooo old... it is worth it to learn?

I thought even Microsoft shitheads had moved on from SourceSafe, or does Team System still cost extra?