I think with all the branching they do,one could grow a small but showy version here with some kind of protection. Why rare palms are rare here- once the tip is frosted,there goes the whole palm tree.
The royal is penciling. Maybe it was planted large and never really adapted?
Again,as far as here...I kind of see that as how they might look here after a bad winter...takes too long to grow out of it before the next winter comes along. I could be wrong,I haven't planted one. My edumicated guess.
Keep the photos coming! We learn too by observation!