"I find the Squirt to be a nice little tool when carrying the heavy duty stuff isn't possible."

I wonder if you could get away with carrying something like the Juice? I have a KF4 for my urban EDC. It is almost exactly mid way in size between my old Wave and my new Squirt. Although not as "cute" as the P4, it is still relatively small and inoffensive looking, and is much more robust.