My first pair of cycling shorts 25 years ago had a "revolutionary" new synthetic chamois. Someone had the bright idea that it had to look like the real deal. It was tan and had real short fuzz. Kind of like a thick crew cut.
It was like riding on sand paper!

From the comparison of your shorts to your husbands, I think you will be much more comfortable with a new pair. I don't think you will miss the undies once you do not need the protection from your bike shorts.

I know you will not miss the pantie line. The fabric on a good pair of shorts is very supportive and will not leave you feeling exposed.