From Kamera Kraft, here is a bit of a different approach to building a camera grip.
These grips are being made for the M10 and also for film M cameras. They may be a good option for those in need of a grip for the M10 and/or film M cameras.
Something to consider...
KameraKraft LMGRIP V2.0 & LM10GRIP V1.0 Leica Camera Grip
https://www.35mmc.com/07/06/2021/kamerakraft-lmgrip-v2-0-lm10grip-v1-0-leica-camera-grip-reviews/