A couple years ago a chain store in town had them on sale at blowout prices. I walked out with literally an armload... felt like I stole them for the price. Called the other stores in the area and reserved some more.
Got home and puked after spending time with them. The tunnel, eye box, and narrow FOV turned me off (for a 4.5x, don't put much worth into FOV normally). Thought about flipping them, but couldn't do it so took them all back.
Afterwards, people told me the MK4 was different than those VX3 that I had bought/returned. At the next visit to Leupo in Beavertown they offered a MK4 at a huge discount. It was no different than the VX3. Could have flipped that one too, but I couldn't bring myself to do it.
A bud had the older MKIV and it was like wearing sunglasses. They must put an extra couple lenses in there to make all the weird optical effects.