Chastity cages with urethal prongs?

So I'm experimenting with chastity cages again. (sadly self locked) and was intrigued by one that has a urethal insert.

http://www.auctiva.com/hostedimages/...s=0,0&format=0

I've now tried it and while a bit weird putting on for the first time (you really need to go slow and relax) and peeing through it (odd but nice) I was wondering if there were any issues with wearing it for days or weeks? Anyone tried it before? What happened ?

Thx

V.

I would ask your doctor.