I just had a break yesterday, after a few days of permanent lock up. As day by day I felt I stopped to try to erect in my tube, when I unlocked I recovered a complete erection.
I don't see how my chastity belt destroys my penis, sorry. There are lots of men like me that wears a chastity belt permanently that don't have problems with their erections. Many of them loose their erections with time and as they are unlocked, even after two months without unlocking, they recover their erections. Perhaps you are experienced about that?