I have several of the PSP's. I keep one in each of my daily carry bags (I have a Maratac Range Bag that I carry when driving (this thread is about the bag and what's in it) and a Maxpedition Typhoon Gearslinger bag I use when riding trains/planes. In the Gearslinger I carry the PSP in a Witz case the same size as this one. I've added some water purification tablets, a plastic fresnel lens, a BCB-type credit card tool, plastic water bag and a pack of paper matches.

These bags are my worklife EDC. They are stocked to get me through 24 hours away from home. The PSP's can be grabbed and stuck on my person quickly if I ever need to ditch the bags. I did actually repack a PSP (but only after watching Doug's video on how he puts the kits together).