I quickly tested my Viltrox EF M2 with almost all of my lenses.
The Rokinon 35mm, 50mm and 85mm look great with it, but I have some serious focusing issues with the Rokinon 16mm.
Focusing on Objects closer to the camera seems to be fine, but there seems to be an infinity-problem with mine. IŽll test this at the end of this week again.