Hi Ron,
I used to use one and had it running all the time but then I just happened on a watch forum where the long term use of winders was discussed and there seemed to be consensus they're not good for auto watches so I stopped using it. As said it was also a bit of a faff using it, swapping watches etc so I just wind a watch as and when it's worn.
I think for non autos then a winder is probably ok.
Tim.