I bought a Flipbac G2 camera grip for my new RX100.
I was a bit disappointed when it arrived.
Placed on the camera there wasn't enough distance between my fingers and the lens barrel. The grip was just too wide.
So taking a sharp craft tool blade I removed an amount on the outer edge to leave a 13mm wide grip. Out came some coarse grit paper to round off the outer cut edge, and then a fine paper to finish off.
Not the most elegant of solutions but it works for me.
P1040404 by jesse1dog, on Flickr
A pity I didn't get the grip on quite straight!
For information only, the Flipbac grip costs $9.99 plus $2.99.