Using a distorted bass sound helps to get a real nice thickness from the guitar/bass balance. I almost always add some OD or distortion to bass. However, I usually have two tracks of bass, one clean and one distorted/overdriven. Using the clean one for pure low end and beef, and using the dirty one only for grit. Blended to taste and then both are sent to a BUS so I can adjust the overall volume once I find a good balance of the two. Both tracks are compressed to shit, lol, before going to the bus, where they are compressed, again, and then limited. Using a little drive on the bass and blending a clean + driven track is all common practice these days, and has been in the past.
~006