lowepro's photo runner and sideline shooter are pretty sweet. the former has a tuckaway hip strap and a removable hip strap, or at least it used to. the one i've used is several years old.

for what it's worth, i like the build quality on kata fine, but i've abused the crap out of my lowepro bags and they're still great. tamrac is the same way for their higher-end stuff.