Im a brooks snob so quit reading if you do not wish to hear it.
IF you need bike shorts you need another saddle. I never wear bike shorts and have ridden up to 160 miles in one day with my brooks. I ride 5,000 miles per year and NEVER have any sores or rubbing etc.
I used to have numbess problems and bought a $100 specialized BG saddle. Even with bike shorts my axx would be bleeding after 100 miles. I bought a brooks and never looked back. I can ride in just plain old underwear and anything from coveralls to jeans to shorts over it.
Brooks Brooks Brooks.
"Kill a cow and save a penis" That should be their motto.