Sorry—got caught up in most recent comments & forgot reason for the thread

I have had this alteration done to over the knee boots. The bonus was that I got to choose where to cut them and have them the exact height I wanted. Mine were a faux leather front and fabric back. I love the result and wear them much more than I would have if they were over the knee.
I went to a local cobbler, it was not overly expensive (no zipper). I say bring them in and get a quote and then you can decide.

Thanks, Neelie! That describes this boot exactly. Any chance you have a photo of the results?