Yeah... I use it along with perlbrew extensively in my Test::BrewBuild distribution.

I had to modify it to work differently (imho better) in its handling of $ENV{PATH} on MSWin. I also added the --with flag for exec like perlbrew has, as well as the ability to add/remove perls available via a perls.json file (so the binary doesn't need recompilation).

I did submit a PR to the original project, but since I'm not a C# programmer, my conventions weren't good enough so my PR was rejected (and I didn't feel like rewriting it at the time... perhaps someday).

I'm going to write another dist that takes some of the functionality of the mentioned distribution, but makes it generic... the ability to control either perlbrew or berrybrew seamlessly on any platform with a single command, with the ability to dispatch any commands to remote perl/berrybrew systems (the above module dispatches test suite runs only).