"Well played Zinger, sir!!!"
Well, I agree with Bill's philosophy of display, which he discussed above. Unless the stated premise of a show is to showcase trees designed and developed solely by the owner/artist, it should be expected that trees of various pedigrees will be displayed. I have no problem with telling you I bought a tree last month, last year, or five years ago, or developed it from raw stock.
IMHO, it should be about the trees, not the 'owner'.