i think i wouldn't bother with a watchwinder personally..... if i preferred one watch over the others, then i would just manually wind the others periodically say once a week just to keep the movement moving.
my old timex had been sitting in a drawer for years and it doesn't seem to have done any harm, for a non-jewelled movement it performs quite well considering.
it takes all of 20 seconds to wind a watch, why bother spending all that money on a contraption to do it for you? the whole idea of a mechanical watch is the tactile feeling of winding it..... if i was that worried about it, i would have a collection of quartz.
some of the best display back watches are non-automatic, you see a lot more and if you already decided in advance which watch you wish to wear, then it doesn't take too long to wind it, set time and date if it has that function. that is the thrill of a proper watch!
just my thoughts!