Frame lock and kick stand (and in my case a fork lock - and a cable for securing the brooks to the frame and lock) and I park just about anywhere without worry. I'm pretty sure I can out run 99% of the population with my 50lb Superbe on their back...

Personally I love kick stands, and honestly no one has said anything ever that even makes sense on why you wouldn't want one. If an extra pound or less of weight is really holding your riding back you've got bigger problems than a kick stand on your bike.