How Big a Learning Curve on Digi003 (002) Hardware Interface

[bilco]

I have a Digi001 and it has served me well. I am going to upgrade and probably exchange my way up to an 003 system. I think I could immediately start using the 003 rack without too much time spent figuring out the differences. But I am thinking it sure would be nice to have a hardware interface to mix without instead of the old mouse.

I am burned out on learning curves for technology though. How long did take those of you using an 002 or 003 with the hardware mix interface to feel comfortable using it?

Thanks,
bilco