Got the 38mm midnight blue knockoff sport loop, and all I have to say is...meh. Definitely not to the quality of the OEM sport loops. At first, upon taking it out of the plastic sealed bag, I was impressed. It looked better than I was expecting. It actually looked very similar to an OEM. But once I put it on the watch and tried it on, I knew it was a knockoff.
First, the band width seems narrower than the OEMs. Mine is the 38mm and looks very feminine. Queue the 38mm are for women! jokes.
Second, the plastic clasps feel like they will eventually break. They seem pretty cheap and thin compared to the real ones. Also, the plastic "nub" at the end of the watch band seems very bulky compared to the OEM one. It definitely catches on things, including my coat when I take it on and off and does not lay flat against the band like the OEM. Its already a bit scratched from lest than a few hours of wear.
Lastly, the knit on the band is much more loose and appears prone to catching and fraying compared to the OEM. Time will tell but there are already spots that appears to have been snagged.
Overall rating is 4/10. The price ($15.99 w/ prime) is much easier to swallow than the $50 from Apple, but that's about where it ends. The quality just isn't there (I don't think - if definitely feels cheaper") and it is not as wide as the OEM. The nub at the end of the band may prove a huge annoyance.
I do not think I'll buy anymore knockoff sport loops (because I already have 3 OEMs) but if I didn't have any and just wanted one to wear causally, then I'd probably pick one up. But if you are going to wear a sport loop on a day to day basis (and I really, really like the sport loops,obviously), then I'd fork over the money and just get a real one. Much better quality and will probably last a lot longer.
Btw, I am at work and do not have any of the OEMs to compare in the pics...