I imported a Samsung odyssey last week and running it on a 980ti or Titan Xp. I did get it for seated games (sim racing) as it is the easiest to set up, has the same res/panels as the Vive Pro, but the main reason I got it was for the flexibility, I just carry it downstairs to the kitchen where I have a 980ti SFF PC and it plays all the room scale stuff really well, no real setup, no sensors etc, yet tracking etc has been flawless. Just one hdmi, one USB and its plug and play.
Upstairs on the titan Xp sim racing I can max everything out at 90fps no issues on the titan Xp and not had to overclock it (although 4770k is at 4.3ghz). Downstairs on the 980ti, all the room scale stuff so far is flawless at 90fps.
IFA is just in a week or two and Samsung Odyssey+ is being announced, which may be available in Europe, and is slightly improved, so may end getting one as well, then I can keep the two setups permanent (the kids love it).
Initially Windows MR was a bit pants, but now it just seems to work, Steam Vr support is excellent, and navigating between Windows Mr home and Steam is a doddle, no need to remove the headset for anything, as either Steam desktop or Windows MR desktop apps work really well when you need that.
I am impressed with tracking,I expected issues, but so far so good, I can only echo recent reviews saying it just works, and I've no more glitches than I've had with the Or which is next to none.
As someone mentioned above, you can the Dell visor headset /controllers for £287 which is great if you just want to dabble, obviously the tiny bit more res and oled panels in the SO did make me I port one, but I already knew I wanted Vr having spent two weeks with a loaned OR.