A friend of mine has the male model. It is truly a work of art.
Con:
- expensive (basic model is ~$1100, depending on EUR/USD exchange rate)
- you have to be measured in person
- only supports limited changes in waist size (about 3 inch variation, I would guess), beyond which you may need to send the belt back for modifications
- mostly invisible under clothing (though skinny jeans will show a bulge..)
- pull-out proof
- no access to penis or balls, external vibrations dampened by a silicon chamber.
- claimed by users to be extremely comfortable (even though it forces you to sit upright when you sit)
- hygiene/cleaning support built in (with a provided syringe to provide pressure)
- upgrade options: radio controlled electro shock; support for internal anal dildo (optional e-stim as well)
- sexy as hell to look at, and not being able to touch or even see genitals messes with wearer's brain.