I'll be starting up my commutes again this week, and I'm looking for an alternative to my backpack - I find the sweaty-back syndrom and achey shoulders too much to handle any longer.

As for messenger bags, I find the slipping-off-the-back issues a bit much, although maybe I just haven't tried the right bag.

Anyway, I could easily minimize my stuff to fit in a waistpack, wondering if anyone's tried that? There don't seem to be any bike-specific options, but I could find a hiking version I'm sure.

Thanks in advance.