It takes a few hours if you have never driving a class A. And some class A like mine are wider. So you do have to get used to the width of the coach. The length only on turns you have to give yourself more room. The longer the coach, the more room you got to give on turns.
I sit a lot higher and I feel more comfortable driving my coach then what I do driving my auto's. "With the one piece windshield the view is fantastic.
Now what did take me more to get used to was the air brakes vs hydraulic. If you have air ride, you will never go back to a coach with springs. But the difference between a class C and a class A diesel pusher is like day and night.