As I am one of those whose palms get sweaty when I get excited, and I tend to get excited when I'm using my camera, I was less than excited about losing traction on my S2.
A trip to the neighborhood auto parts store yielded the solution: Liquid electrical tape.
If I'd had a clue that it would be this successful, I would have taken snapshots of the process...
If you choose to do this, have confidence that (the Plasti-Dip brand, at any rate) the liquid electrical tape won't melt your plastic body.
First, I looked at where I hold my hand on the body...Then after a careful cleaning of the area, masked along that line with 3M Fineline tape (to get smooth curves), being careful to follow the body panel edges, followed by a couple of passes with the regular 3/4 inch masking tape.
I then lightly dabbed small gobs of the goo around the masked-in area, then brushed it around thinly and uniformly, making sure that the goo was thoroughly worked into the textured surface.
After a quick flash off of the liquid tape, I then lightly daubed the coating with a folded paper towel to retain (and accentuate a small bit) the textured surface.
After that layer was pretty much dry, I repeated the application process. I let that layer cure a little TOO much, so that when I removed the tape, it left small "tags" of the liquid around the edges. A quick bit of trimming with the exacto knife took care of that in short order.
The resulting "grippy panels" are nearly unnoticeable, and nearly appear factory...And in my mind, it's what Fuji should have done to begin with.