So far so good with the boots although they do make her feet look VERY big. Not sure about the jaunty angle of my hat silk either.
Update 20th december: I have decided to send the boots back as I am not convinced about them. Petra seemed to be clumpy in them and they appeared to affect her gait. I rode out in them in the ice today and she slid all over the place and I didn't feel at all safe - ended up walking her home.