I bought a Chrome Metropolitan and quite frankly was a bit leary to use it for a while. It seemed heavy and when I put in some books and other stuff it seemed uncomfortable and too bulky when I put it on in my house. I considered selling it but today I decided to use it and see what happened. I loaded it with books, tools, some personal items AND my full Camelbak waist pack (1.4L) inside the bag. (Not a case of beer but still not light.)

It was amazing to me that as soon as I got on the bike the bag suddenly became amazingly comfortable and during my ride (about 20 miles round trip), rolling with some small hills and long inclines, the only time I felt the bag was when I thought about it. With the stabalizer strap tightened, there was no movement whatsoever. It's now a few hours later and my shoulder has no soreness or any adverse effects.

I wish I had tried the bag a while ago.