Just when you thought you'd seen everything...
Something new shows up.
This is purported to be a photo of a Walker taken at a show. The bit is certainly common in the Walker world. The brow band is also of a type commonly seen on Walkers.
"Stewarding," the training of the horse to ignore pain during palpation of the feet, is certainly common. But this is a new wrinkle, for sure.
I can't vouch for the provenance of the photo. The poster who put it up on another site has not disclosed its origin.
Readers can judge it for themselves.