You would have to be pretty erect in order to get the condom on, and you would have to stay that way in order to keep it on. Eventually, your erection will go down and the condom will slip off. The lubricant will escape then and add to your problem, not to mention having this scrunched up latex tube sharing the dancebelt pouch with your penis.
I always get leakage, and a lot of it, to tell the truth (due to an overactive prostate, I guess). For that reason, I wear only Capezio quilted or WearMoi dancebelts. The WearMoi belts are padded. (Sammi, the quilting/padding also smooths out my contours. This is especially true with WearMoi dancebelts.)
No unsightly and embarassing stains ever make it through these dancebelts. I am self-conscious about taking my dancebelt off in the men's dressing room after class, because it always has this big wet smear on the inside of the pouch. It's probably ridiculous to feel this way, since I doubt that anyone is studying my dancebelt, and why should I care, anyway?
The biggest problem this leakage makes for me is in the laundry. Dried seminal fluid is damned hard to remove without wrecking the dancebelt.[/i]