OK....

First, Knotted, the bags pictured on FrostRiver sight are NOT Nigel Smythe bags. If you zoom in, you'll see that the logos pictured all say Frost River, not N.S. They are not "that" similar to Nigel.S. bags either. F.R. is not selling N.S. bags! Nor are they making N.S. bags. A lot of these canvas bags tend to look similar, but that doesn't mean they are necessarily breaking copywrite laws or anything.

Second- I have one of the VeloOrange "banana bag" type bags:
http://www.velo-orange.com/saddlebag.html
I am VERY pleased with it, especially since it is the only one of those "type" bags that has a strap that feeds over the top where you can slip a rolled up shirt or vest under the strap on the outside of the bag- totally adds to the storage ability. This is the bag I recommend for that reason- the strap is so handy it's even worth waiting for if it's backordered.

Just send the bag back if you don't like it. And i agree, they should update thier site with PHOTOS of the actually bag, as it appears they have made too many changes since those drawings were made. Call them and let them know.