I have one and it worked well for my warmblood gelding who developed a bit of a sway to his back due to muscle wasting from cushings. The panels are more curved than the average saddle and they accommodated the sway perfectly. Also, the gullet of my particular saddle is wider up front and gets significantly narrower towards the back, which fit this horse fine because he had broad shoulders but his back became narrower as he lost muscle from the cushings. That being said, this feature has caused problems with other horses I’ve tried the saddle on because it looks like it fits in front but it’s too narrow in the back. In my experience, it’s a bit of an odd-fitting saddle but, if I were going to market it to a particular group, perhaps those with narrower horses or aging horses might be a good fit. This saddle would have never fit my gelding in his younger years and I’m sure I’m going to have trouble when it comes time to sell it.
I also think some riders with shorter legs have a hard time with the large thigh blocks. All of the shorter riders (under 5’6") that have ridden in my saddle say the thigh blocks hurt their knees. Taller riders seem comfortable. Mine has an 18" seat though so perhaps a smaller seat would fit a shorter rider better. Just my experience…