Battery grip for M series
I'm currently in the market for both a new dslr as my main shooter (large wildlife and landscape mostly) and a small M series type camera to complement it when I don't want to carry a big camera round.
For me the perfect solution would be a battery grip on an m6 mk ii. This would allow me to have the compactness of M series when needed, but something a bit more balanced when attaching large lenses for wildlife. It would also give me the option to shoot vertically. Basically turning the m6 into a 90D and saving me the money on buying both.
I understand that there aren't currently any official battery grips for the M series. The only ones available are from the company that does 3D printed ones. These only offer some extra bulk to the camera and nothing else.
I have a buddy who is good with electronics so could potentially adapt one from the other lp-e17 cameras.
My question is: are there enough connections in the battery slot to even enable a vertical grip with button functions? Or are there only the battery connections?
Thanks for any insight.