Got it, thanks. FWIW, I owned a Han-Arab for years - she was a lovely and fun mare. I even bred her a few times to warmblood stallions - and kept one of her daughters her entire life - so I understand about the quality of Arabian sport horses. My comment was not intended to be snarky about Arabian sport horses but rather to point out the fact that most Arabians and most DHH have rather level croups and have a tendency to move out behind themselves, so people familiar with Arabians are not going to be put off by seeing a DHH/Arabian cross with that same type of conformation and movement.
And to clarify - While a DHH/Arabian cross may makes sense for folks who want to show in Arabian part-bred classes or Arabian Sport Horse classes, I do not think that it - in general - makes sense for people who want to be seriously competitive in USDF, USHJA, or USEA competitions. (Sorry if I am not expressing myself very well - I didnât get much sleep last night - sick dog.)