One of my private piano students, Wil Dannenberg, also performs on French Horn. [In fact, he is currently considering a double major in jazz piano and classical French Horn at a variety of colleges.]
He recently won the 2012 Macon Symphony Concerto Competition AS WELL AS the 2012 Macon Morning Music Club Joseph Maerz Award competition.
I was his accompanist for both events - and he indeed played well [if I do say myself!].