Thanks! Those steps helped me play with things a bit more and figure this one out.
Following that tutorial you spawn from PlayerStart and the pawn doesn’t have an explicit camera. My floor (in the real world) was set at the center of that PlayerStart, 92 units up (the Capsule Half Height of PlayerStart). If I move the PlayerStart down, so the middle is on the floor (and it says BADsize) the height is correct in scene.
This explains some of the cases I had where the controllers were offset from the HMD.
Thankfully the scale was fine.