High end watch winder seems to be a category of an automatic watch to have. A collector of watches doesn’t only have an item of watch winder but he will have more items of watch winder.
It is generally safe to use a winder to keep your luxury watch for days, even weeks at a time. However, it will highly depend on the capabilities of the device. A good luxury watch winder safe usually comes with automatic movements that have a slip-cutch mechanism that is aimed to avoid overwinding. It will be very helpful if you don’t put too much burden on the mechanism.