The issue with this for women is - how do we know what size condoms to keep in our dresser? There are no condoms in my dresser at this moment, but I would think it would be very odd keeping various sized condoms in my dresser.
Use a female condom- excelelnt for githy cocks. Problem solved! Feels better for a guy too.
The problem with male condoms are that they assume you are the same hardness & size all the time, which they don't test for, & are not tested with external & internal friction together, & simply don't last a long time. So basically, if you're into long varied sessions they burst - repeatedly. One really cut me to pieces once.
The only problem with female condoms is that women don't like using them.
BTW, proof of being STI free is no guarantee that your partner won't pick up, or develop something in the future.