Hi Eloy, I have spent a bit of time with it.  Here's what I did to get things going:

1)  sudo gem install rvm

2)  add the following to your .profile after the last 'export PATH=' setting:

      if [ -s ~/.rvm/scripts/rvm ] ; then source ~/.rvm/scripts/rvm ; fi

      Note:  I didn't like running the 'rvm-install' because it created several different shell files:

                  ~/.bash_profile, ~/.bashrc, ~/.zshrc

                  where each file contained similar content.

Yeah this is I think where it went wrong for me. Thanks! I'll give that a try tonight.

Rubygems is great but the RVM team was able to get something working in a short amount of time.

Yeah, but the point is that this is a problem of RubyGems, nobody else's even though others provide workarounds. Ruby allows one to specify the prefix/suffix, so RubyGems should inherit this transparently imo. But I think that in the end we agree on how the user should experience this, ie transparent :)

Eloy