I like the concept but I would like to see something different with the accent. If you can, maybe do something with the GGM in-the accent instead of just the G. Alsio instead of a square maybe we could try something with a circle as well. I really like what Gucci did with their logo, here is a link to it,
http://media.photobucket.com/image/gucci+logo+/theshopspot/Gucci_Logo.gif, you call search to see other examples.
Thanks for your designs!