Your spot on there Nogg. Kevlar jeans are not a replacement for your leathers, they are a replacement fro your jeans. FACT.
Popping down the road a few miles means you are on the bike a shorter amount of time, therefore decreasing the likleyhood of being in a collision. And before anyone jumps in with "most accidents happen within 5 miles of home", I know this. But that is because most driving is done within 5 miles of home and % wise, you are no more likely to crash near home that anywhere else if we compare minute to minute statistics.
As to the RoadRash Kevlar jeans, they have undergone testing and showed good resistance to wear, heat and tears over <5 seconds. Furthermore, a return customer of mine called me a couple of months back to tell me about his off. He was heading down the on ramp, giving it some welly, when a daft smidsy decided to pull some crazy move and T-boned him (or he T-boned her actually). He went arse over tit, over the bonnet of the car after hitting the wing Starsky and Hutch style, and slid down the road from 70+ to a halt. His 3 y/o GSXR Thou was a write off, as was his helmet. He hurt his knee and both his wrists. His RoadRash Jeans were fine. He said he can still wear them, although a "bit" of the stitching came off one of the rear pockets. He had on the Cammy ones at the time, and they were about 2 years old when he crashed. That's 2 years of him wearing them to work as an Electrician in construction, with tools in the pockets, up and down ladders, through all weathers.
I am quite happy with that result.