Years back, I was interested in a pair of Docters - but I very seldom observe with one eye and a pair would run to $1400 before shipping and taxes. I passed.
Two years back, APM brought out their alphabet soup, an eyepiece that quickly gained a reputation as serious competition for the Docter. Violet Friday arrived on a day when there was a bit of room in my toy budget .. so I bought a pair. They arrived and so did the clouds, rain, hail and lightning.
Last night was their first light. In short they are stunning eyepieces. They are comfortable visually and physically. The eye-guard is very soft and creates an effective light seal. The 84° field is much wider than my binocular vision but the peripheral image is nice.
They are sharp across the field and the diffraction pattern was easily visible at (notionally) 88x. The E & F stars of the Trapezium were easy ... but I became conscious of needing to re-focus frequently. It was weird - it felt that my eyes were gradually drifting out of focus.
Then I did the face palm ... These things are heavy. Installed in a pair of Mk V's, my focuser was carrying 2.1 kg (4.6 lbs). This is quite a lot, even for a FTF3545. In all honesty, I don't think these will be usable with binoviewers in anything smaller than a FTF3035.
As time and weather permit, I'll do some comparisons. For now, I'm very pleased.