I have a 1/2 clyde 1/2 tb. He was gelded at 1.5 years old. He is now 3 years old, and knees are definately not closed - can’t wait for then so we can start jumping. Currently he stands about 16.2 hh - with the X breed will I still have a lot of growth from now till say 6 years old? I’m hoping he tops out between 17 - 18hh.
My last jumper was a full clydesdale, 18hh, who did his major growth between 5 years and 6 years old. I’m hoping he takes the clyde side and keeps growing. I’m used to riding 18hh, so anything under 17 feels like a pony 
Would love to see photos of all your horses! Love this mix! Stewy was bought as a 2 year old, that I had planned to train, jump big for a bit and then eventually sell. Damn if that horse hasn’t sucked me in big time, he floats like a dressage queen, and constantly jumps out of his pen - suddenly not for sale 