RVM has a lot of features and is very powerful, but, as a result is more intrusive.
In either case, Changing ownership of Apple's installation of Ruby isn't a good idea because System installs/upgrades, and Disk Utility can automatically revert/repair the ownership and permissions of the directory.
Using security software such as Deep Freeze, Clean Slate and Centurion Guardian with Pharos Sign Up Vx can present problems, due to the way that the Sign Up Client stores information locally.
But, after a month or so of doing this daily, I hit my limit and requested a new modem.
, because you are not sure about the permissions problem, I'd say it's not a good idea to continue along that track.
Instead, I'll strongly suggest you look into using either rbenv or RVM to manage a separate Ruby, installed into a sandbox in your home directory, that you can modify/fold/spindle/change without worrying about messing up the system Ruby.
For the past month or so my Internet connection has been really flaky – dropping out on me one to five times per day, and usually right when I’m in the middle of something.
And with most of us working online, there really is no “good” time for the Internet to go out.