Jonas
Good list!
I haven't the time right now,but I would suggest adds if I have some ideas,but it seems pretty complete already.
I should add "prevents masturbation(if worn with secondary shield)" to the challenges,too,there is already "prevent sex",but It's a bit different.
I like you insisted on the need for it to be consensual to use it.
Foxies
Difficult question.Can it be considered as chastity if we can wear it or not,depending on the mood of the day?
Maybe,as it was suggested sometimes here,have a sort of waiting(like 1 month)between asking to take it off,and doing it,if the wearer haven't changed his/her mind.And knowing that,if it is taken off in such circumstances,it would stay off,he/she couldn't ask to have it on again after some time.
Jonas it could be good to have a description of how to approach genuine chastity.
Good idea.
Jonas
My-Steel are comfortable and secure ones,too.