S95/S100 Case - Specific Needs...

I've read the previous posts on these camera cases - good info here. But I have slightly different requirements than the owners who have discussed this topic. I have an S95, and I'd like a case that:

• Is small and space efficient

• Does not use a zipper for the camera compartment

• Has the capability to store a spare battery and/or memory card

• Battery/card pocket is secured with a zipper or velcro

• Can be secured to your belt

• Allows for quick access to the camera

I've got a Rezo 15 case now. But, I found that the battery falls out of the unsecured pocket - rather easily.

Any ideas?