Ours dont come in at night but usually come in for a few hours in the morning to have their breakfasts, but we always keep their turn outs on, dont see the point of stable rugs.
When my horse is in work I tend to ride after work and will put a stable rug on afterwards. He is not in work now and has a well fitting breathable turnout rug so I don't see the point to taking off a warm rug to replace it with a cold one, I leave the TO on.
Roll on warmer weather so we can ditch the rugs altogether!