Hi Folks,
It's been a while since I've posted in this thread. Thank you all, for your comments and feedback. Indeed, the reason I have been machining the PalmGrip for a vertical dovetail or L-plate attachment is from your suggestions. The L-plate is available now.
The grip has a bead blasted type finish and standard black anodizing to produce a more non-slip surface. The early photos showing a purple shading may have something to do with the sensor qualities. At any rate, the satin like finish seemed to have an effect on the color in photos.
I was hoping the NEX-6 was going to be the exact same shape as the NEX-7, but no such luck. There are 3 or 4 areas of the design that needs a tweak, so the NEX-6 will get it's own version. I hope to have a NEX-6 grip available by the end of December.
As usual, my website has all the most up to date information.