There is definitely a lot to learn from working with a bass. I honestly think you should take it a step further and try and play bass in a band or simply just jam with some other musicians where you are the bassist. Being a fellow rhythm guitarist (although I do play lead often, but my strength is in rhythm), I often find the shift over to bass to be quite easy. The key is is to not be too intrusive and make sure you lock with the drums. I honestly believe if you take that approach you can come off as somewhat convincing on an instrument that you don't play predominately.

Anyway, it never hurts to play around on instruments that aren't your main forte. This will teach you quite a bit about how to communicate with other musicians, and will strengthen your overall musicianship.

Keep up the great work as always! :D