I've been daily driving my dually for over 9 years. I really don't think of it as a dually, it's just my truck. Yes, I go thru bank and restaurant drive thrus on occasion. It fits.
As has been said, length is a bigger problem than width.
When I moved my 11' TC from my SRW to a dually I only had to drive out of the garage and down the driveway to tell a big difference.