Oh, hrmm. Do you or anyone know of a good external VF for 35 which give decent eye relief?
I found this link a while ago.
https://www.shapeways.com/product/T5EK9LFUG/35mm-viewfinder-top-cover
It looks interesting and very glasses friendly, but I think I remember reading somewhere that in theory it would work well but that when put together things were loose and didn't feel very solid. Which.. I mean it is a frankensteined VF and while thinking about it and working on it I imagine with some glue and taking your time to assemble it you could probably make it to where parts don't move around and stuff.
Not the case. The optics fit into slots that mimic the same design of the slots used in the donor camera, and they don't move once installed. No glue necessary! The parts just fit together.
It's actually quite a good viewfinder, and only 1/2 ounce.