There are a ton of bags in this basic saddle bag style out right now...Coach's bag is a reinterpretation of one of their 1972 classic bags.
The MG bag reminded me immediately of the Celine Trotteur bag (the old style)--which is beautiful but @ just under $2K it's more than I want to spend on a saddle bag.

http://www.spottedfashion.com/celine-trotteur-messenger-flap-bag-reference-guide/