IF you have wanted to protect the glass on your M display, I went out on a limb to try the closest fit to the M display by exact dimensions. Since Giottos as yet does not make the M screen cover. The fact is, they probably never made the M9 either, they just happened to have one that fit it probably, so they added the name onto it, lol.
The height is pretty well an exact match on this screen protector. The width is just a little bit short of an exact fit. IF you can live with peering behind a frame line edge for seeing exact width on LV, I believe you will be happy with using the Giottos SP8321. Personally, I don't often think my width will be that precision critical for LV. It does not cause any issues with menus of course.
Adorama part number:
Giottos 67.4 x 51.2mm AEGIS Screen protector for Nikon D600 , D800 , D800E , D7100 SKU: GTSP8321 MFR: SP8321
I spent a good 45 minutes to an hour searching through all the Giottos specifications to find this very close fit. IF you want something quality over the knock off ebay listings, you may give this a try. I am telling you it's NOT an exact fit, but it is close enough for me. YMMV.
Price isn't cheap on this one, it's 38.99 Yeah, that fits with Leica pricing structure real well.