I don't really like it, but I do it sometimes. Because I don't know when I'll be doing it, I mostly wear Carhartt cargoes, about 2 sizes too big. There is NO problem getting my hand in my pocket, sitting, standing, in the car, or any other position. Try Carhartts, as the pockets are slit at an angle, instead of the semi circle of most jeans. And as for seat belts, I live in NH, so I generally don't wear one except on the highway, or on long hauls up to Jackson.