The depth stop should be standard equipment. I'm drilling cup holes for Euro style hinges right now in 5/8 melamine and a depth stop is an absolute necessity.There is so little material left below the cup before blowing out the other side that it leaves no room for error. Mine is a Delta floor model but the quill, depth stop, and pointer are so much like Gerard's that I'm betting they were made in the same factory under different names.
Someone I consider a master woodworker once told me that a master woodworker is not someone who never makes mistakes. He is someone who is able to cover them up so that no one can tell.