The Cathedral of the Episcopal Diocese of Utah has the following Arms, which I just found searching the Internet:

http://stmarkscathedralut.files.wordpress.com/2012/02/crest.jpg?w=214&h=270

The Winged Lion of St. Mark is the central Motive. Picture from http://stmarkscathedralut.org/

Nicely enough rendered, but for me anyway (hardly Hawkeye) the central charges—lion & the gold cross it is holding—tend to get visually lost in the vair potenty (if that’s the right term).