I'd been in the market for some slim work jeans, so when I came across another custom jeans site, I had to take a look. Great distraction from back/insurance issues, too.
I'll write a real review once I get them, but so far I really like the UI. I didn't see this when I was designing, but when you look at other people's designs they also have an ASOS-like catwalk feature that shows the fit of the jeans on a model - nice! They also have a cool feature that lets you put your design up for sale, so that you get some of the profit if your design sells.
Here's the pair I've done - pretty simple compared to some of the others but, sometimes, that is the hardest thing to find in a jean: http://getwear.com/women/3905/
I will definitely share detailed results!