Martin,
I've run into that same problem. I've got my keys in one front pocket, another key ring with a Pulsar 2, Mini Fox 40 whistle, Leatherman Squirt, 36" tape measure, and 12 ft of braided paracord in the other front pocket, my regular wallet in one back pocket, and a Maglite Solitaire and my PSK in a zippered wallet in the other back pocket. The PSK is packed tightly, and unzipping it causes several items to fall out immediately. I don't think I would want to add anymore to my EDC, either. Hopefully I've got everything covered.