It's a very large bag, but it's beautiful. All of the Manhattan collection have a "chunky" look to them, but that was intentional by Marc Jacobs. A lot of his MJ bags have a chunky look, too.
The SA's in the stores love them even though they see them every day. Three of the SA's in the boutique I frequent own the GM and a fourth owns the PM. I own the Hudson bag. I've had it since October and I still love it. I don't use it every day, though. I'll use it for 4 or 5 days and then switch to another bag for a few days, so I use the Hudson about 5 or 6 days a month. Maybe I would get tired of it if it was the only one I used. Also, for some reason I think of the Manhattan collection as fall/winter bags? Because they're heavy? I don't know...