Andrew
Good idea. Maybe have the corset designed to form a base to the belt and yes have the belt fixed to the corset. That would be neat.
Yes I do sleep in my corset.
Corsets and chastity belts
Eva30corsetlover Yes I do sleep in my corset.
Is it medical necessity or your preference?
Andrew the corset is absolutely not necessary. Neither during the day or the night. O my my preference. For health considerations and considering my medical history, my searing of the corset is supervised by my doctor. And it heppens to better the situation with my spine. But it is not a necessity at all.
OK 
I asked because even among corset lovers sleeping in a corset is rare...
Andrew I have some friends on kinky forums that do it as well but yesany people wear them for bondage or aesthetics. Some of them wear them 23h per day. I must stay at 22. But I am happy like this.