Match Technical E-clypse 34mm 1.25x

[dleibow]

Has anyone used this eyepiece magnifier? I have an M7 with a 0.72 finder. I generally like the finder a lot. I am using a 75mm lens a lot, and also a 90mm, though I do not use the 90 as much as the 75. If you use the magnifier, do you have to remove it to comfortably use a 50mm or 35mm lens on the same body?
Thanks.