I have been using a bibs and jacket combo for quite a few years now and would never go back to coveralls. Much better movement, room and warmth. Just make sure you get a quality pair of bibs and jacket/parka to keep you warm. There are a lot of cheap ones out there that work, but don't keep you very warm. A couple years ago I spent more than the wife knew about to get a good warm pair of bib and jacket. I never regretted spending the money, to help keep myself warm when sitting for hours, without having to put 10 layers under my coat.