I believe that Laurel Berg was the 1st person in the US to finish a dog in an HCC. Broker (same sire as my Sabrina) was a very flashy, showing machine. The HCC suited him because he was naturally pretty and he had excellent length of neck.
Unfortunately the HCC makes most dogs look short in the neck and because there is no spray up, you can't give a Poodle with a plain or ugly head any help.
You should note that Laurel has not shown another one in an HCC again (other than my Sabrina once). She advised me that the HCC was just not as competitive as a full Continental and that I would be fighting an uphill battle by showing my dogs in an HCC.