Alexia Cook thanks for the input. It is a shame... I have a monoflap and dabble in both jumpers and eventing. I will ride in nothing but a monoflap even if I decide to do straight jumpers. I loveeee it!
In my opinion, it is because a lot of saddler sell jumping saddles to jumper and monoflap saddles are considered made for eventing or dressage.
It is a shame because monoflap saddles are very comfortable for both horse and rider.
Hope it answers your question :)