Yes, I use both. I do architectural work so I have to do 2d working drawings as well as modeling

Rhino became my tool when I quit AutoCad after 25 years.

Now I use MoI for most of my modeling and Rhino for drafting and other odds and ends. The drafting part of Rhino is really pretty good.

DraftSight is a pretty good, too, for a free drafting program so one does not really need Rhino ... though I have had some trouble printing with DraftSight.

I know I will have to think hard before the next version of Rhino comes on the market ... I am using it less and less.

cheers,
eric