I puttered around with one with the 110ED refractor from what I recall and it really didn't do much for me for visual. But the seeing here is not that great, particularly at the low declinations that the planets have been at. I accomplish essentially the same or better on Mars using a red filter, so I haven't gotten much out of the ZWO ADC. In 1 arc second or better seeing it would likely have more impact on making high powers sharp. I just haven't had that in the backyard this past year.
Haven't really tried it with the Dobs from what I recall. The last conversation I had about it I was told that for short ratios it actually needs to be paired with a 2x Barlow to get the focal ratio to a point that works well with the device without producing astigmatism that exceeds its benefit. So if a 2x or so Barlow can be employed to reach focus in a Dob, that could make it useful for me. Like I said, I have been far more seeing limited than chromatic dispersion limited, so I haven't pursued this with the larger scopes...especially in the backyard where the seeing is the worst. And if I don't work something out in the backyard, I probably won't employ it at a dark site with better seeing--at least not when it requires substantial fiddling to get it to work.
I'll probably make another pass at this next year for Jupiter and Saturn...if the seeing is any good. If I lived at a latitude 5 or more degrees north of here I would probably find it far more useful.