If you've stumbled onto this page and are also looking for an iphone tri-fold wallet, check out the kickstarter Tech Wallet - Fits Your Phone. Not exactly what I'm looking for, but closer than anything else I've seen.

I've been looking for a replacement for my old Palm Pilot wallet for quite some time. I want something small enough to fit in a large front pocket, but large enough to hold all my cards and some cash. The phone should be usable without removing it from the wallet, but should be easily removable.

Here are some pictures of my current ratty wallet. I'm not completely attached to the design; other layouts might be acceptable. I'm currently using an iphone (despite what's in the picture).

Compared to the current wallet, my ideal design would be only as high as the iphone itself, it would have additional credit card slots in the middle trifold, and would have a bill fold slot horizontally behind the card slots and the phone (so that the bills would fold into thirds).