I have one just like it. It operates just fine...but I don't use it very often. It's not as useful as I had anticipated.
It's just about terrible for slicing raw meat (like for jerky). Use partially frozen and you'll have a much better experience.
I tried slicing bacon that I pulled off the smoker one night...that was an unholy, greasy mess...and the slab was way too wide for this slicer and the bacon slices kept sticking to the back of the blade or stuck on the motor housing behind the blade. Keep the width consideration in mind...the hand guard only comes out so far.
The motor housing gets in the way of the slices that your'e trying to pull off, a lot of meat sticks to the back of the blade and gets pulled out of line so you end up with a "lip" on the end of the meat you're trying to cut. You don't get a straight-across cut so you have to take if off the machine every now and then to manually slice off this little triangle of meat to keep things going smoothly.
I grew up using a real deli slicer and I expected this would be similar...but it's not. The RPM on this thing is way slower than a commercial grade slicer you'd find in a deli (or at least found in deli's when I was a kid).
It's not a large slicer either. I frequently run into cuts that are just too wide to use on it.
I do most slicing by hand now. I think this has been relegated to slicing jerky meat when I'm using a roast that's small enough to fit on it, AND when the meat is partially frozen. Raw meat squirms and gets out of line on this thing, but if it's partially frozen it can do a pretty good job of keeping the thickness right where you want it and not make too big of a mess.
I've never used it on cooked meats...I've just always done those by hand...but on a piece small enough to fit, this machine would do just fine and allow you to dial in the thickness to right where you want it.