Hi, I havent got the Overton but I have their dressage saddle. Bought out of desperation if Im honest as 2 master saddlers left her sore and I took a chance on Ebay knowing from the failures!, this was the shape she needed. It is the only saddle shes had that stays where it should, she hasnt been sore since, confirmed by physio and Im really pleased with it. It can be heat moulded to alter the width, although I used shims for a couple of months but dont need them now. Ive had comfier but can put up with that as shes happy in it. For the money especially if you can find a 2nd hand one, I think they are well made and a decent quality.
Shes an ISH, more TB with a moderate wither and a bit sloping towards her croup, she may have a teeny bit of growing to do yet.
My friend had the jumping saddle and was really happy with it
My son has a JW jump saddle that's really similar to the Overton but not the exact same. He's happy with it and it fits the pony well. We bought it 2nd hand through our saddler, and got a bargain. Very happy with it!