I got a comment like this last night! Some snow slid off the roof yesterday and the two ottbs plodded along while the other horses were spinning and spooking.
OP - I’d also check out some eventer groups on facebook. I think I’ve seen a number of ottbs posted on Major League Eventers down in Ocala for the season. I bet Area III has their own page too, I know Area II does. Might not be the refined and ready to go you’re looking for, but likely going 2-2’6"