Chastity device reviews discussion

I own a couple of the Chinese cages and have been satisfied with them. One is an A272 model. My wife is heading to Europe for nearly two weeks and insists I stay locked up without relief. She’s taking the keys along (this isn’t new to me since there’s always a spare at her office). She suggests adding an anti-stripping ring as extra security. Has anyone else worn one for a long period? How painful do they get during an erection (using Viagra while caged is one of her favorite punishments—it really sharpens your focus)?