Well I took the plunge (easy 20 minute install), and I guess I'm happy? As a 6'4" dude I can now go so far back that I can't push the clutch all the way to the carpet, but the brake/gas would be fine. It goes so far back that I wasn't comfortable reaching the stick or the steering wheel anymore, although tilting the seat-back forward helped that a bit. One unintentional benefit is that the mounting holes are a lot bigger, so I can now play with adding more washers under the front to see if that helps

Took a 3+ hour car ride over the weekend and it was mildly more comfortable, although far from the best I've had (I miss power tilt seats).
Box came damaged (just like my hitch did), looks like rails were barely contained in it, however were wrapped in lots of foam and paper and survived without a scratch. Was VERY concerned that it said Honda Fit, especially because their website STILL lists it as being available since 2007.
Left rail was nearly 2" from the carpet after bolting one end in, it's like the bracket wasn't made for this car. I was able to put a buch of weight on it and bend it down enough to tighten the bolt and bend the bracket...but this is an obvious design flaw.
Stock rubber floor mats don't fit in the rear anymore (rail comes back and is tight to the carpet. Bummer, I'm going to hate cutting them up. Plastic "shoe" over the back of the rails also doesn't fit, had to take a clipper to them and remove some plastic.
View from the front seat, it looks ok. The powder coating is nice and thick, and matches my black interior. I can't help but notice that they included silver bolts instead of black oxide though, may take them out and try painting them flat black. I do like the ledge to put my feet on that was created by moving the seat back, helps rest my legs when one foot isn't busy.
Last comment I'll make is the quality of the bolts is very poor, they started rounding off when I put some torque into them and seem very soft. It's a brand new socket set, and I made sure it's the right size, they just seem CHEAP, which is disappointing because of the price of these stupid brackets.
Overall I'd rate them a 7 out of 10, mainly because there are no other good options. The bracket itself is well designed for the most part, but the execution is a little poor.