No.... I thought you meant having the GPS on/programmed and following the directions while driving. I always pre-program it. I have a stand alone one, like your DH. You could program it while driving, unlike the built in one DH has, but I would never do that.
I didn't take phone calls when I didn't have Bluetooth and there were quite a few times I pulled over for work conversations. I do spend a good deal of my time driving from person to person, so when I started this job this happened more often. Now, people know when I'm usually available, at my desk, or working from home.
I'm not perfect.