I must say. Most double and cross strung harps have warranty issues. The stress on the soundboard alone is enough to break any camals back! I’m not sure I’d make that choice. Especially with the constant changing temperatures my harp already endures!
The idea is nice…. no levers. Cross strung is so very much like a piano. ( I’d stick to the Salvi Ana or L&H Prelude. Big sound and a concert touch )
Goodluck with your search! ( Check out Blevins harps. They have cross and double strung harps!)
-Christopher-