But it would slip off you say. That is the logical conclusion

However, I believe a condom could be engineered so it doesn't slip off simply by placing an adhesive on the inside that is designed for sticking to skin, but that can also be removed without causing injury. This would expose most of the penis to a more natural feel while providing protection at the business end.

I wonder why the condom companies have not tried to develop this, or maybe they have and failed.