I think you will find that most riders prefer traditional bike shorts over bibs because of the fact that bibs (cheap or expensive) move around a bit more and tend to cause discomfort in the shoulder strap area.
Imo it's a win-win as bike shorts are also much less expensive than bibs and do not involve half of the maintenance. Take a look at Assos website for care instructions of their bibs if you have about 30 minutes time to waste. Special detergent, special laundry bag, special stretches you are supposed to do every time you put them on, etc...