Dpreview added the Studio test results for the E-M1X including pixel shift test shots:
“Our standard studio tests show that conventional stills performance is little changed from the E-M1 II, but its high-res Pixel Shift mode is still impressive.”
Peter Baumgarten also tested the E-M1X and writes:
In the short time that I have been using the E-M1X I have been quite impressed with its performance and more importantly, the quality of images I was able to get. After a few days of use my muscle memory got used to the increase in size and found the camera to be quite comfortable, especially with the longer lenses. At a price of $2999 USD, this isn’t a camera that most enthusiasts will turn to. However, with the rugged build, great image quality, and increased performance it is definitely one that should attract many professionals who want the advantages of m4/3s system.