I've seen all over the place people using RVM/rbenv to install the most updated version of Ruby on Linux. On development, I understand that it may be OK to do this, but I can't understand why would I do this on a production server instead of using the Ruby version on the package manager of the distro.
Are there any downsides of using the most updated version of Rails (4.2) with Ruby's version of Debian's package manager (currently 2.1)?
My goals here are to be as stable and as secure as possible, I don't care about the shiny new stuff.