I picked one of these up at shotshow and I'm hooked on it. Call me a wuss, but if you ask me when you go to the range you are there to shoot and not load! The UpLULA has been working great for my SIG-P226 9mm, but the crazy thing is it can work on .45, .40, 10mm, .357, and 9mm caliber rounds and magazines; both single and double stack mags. The wedge design guides whichever mag you are using into the right place and then the inward metal bar holds down the bullets to allow easy insertion of your next round.
At first it can be a little awkward to get the right motions down, but after about 5 magazines of practice you should be solid and will only get faster from there. Some notes that you probably won't notice on the video is that you do need a surface to push down on to operate the UpLULA with one hand and insert bullets with the other. A little push tab on the upper side allows the UpLULA to be locked in the collapsed position to take up minimal space during storage. A keyring is also included at the bottom for mounting and attachment options. I highly recommend the UpLULA saving me time and sore thumbs. Check out the shotshow vid to see it in action: