Yeah I've been hearing that about jeans often lately, and I always ride in jeans. The problem with riding in (motorcycle specific) pants, for me at least is most of them are always kind of tight fitting, uncomfortable and always ride up on my boots when sitting on a bike. What kind of pants do you ride in? Are they comfy?
Motorcycle specific textile pants can generally be tightened-up at the bottom, which stops them from riding up and over boots. This is done via Velcro flaps, snaps, or lacing. They also aren't particularly tight fitting, as they're geared more towards touring use. The ones I listed, along with my mesh jacket, also effectively have 4 layers; inner thermal layer, inner rain layer, the mesh pants themselves, and zip-out panels that can be used to cover the mesh on the outside.