Quote Originally Posted by ROL View Post
signing on the front of the print itself is widely considered to be gauche.

I've never heard such a thing in the 20 years I have exhibited and sold my work. Most photos I see in museums and galleries are signed on the front of the print right under the image in the lower right corner. Drymounted ones are often signed on the backing board under the print (mat window is cut larger on the bottom to allow the signature to show). Signing a mat should never be done because the signature is lost if the mat ever needs replaced.