Has anybody used one of these?
Never that particular one, but the style. They're kinda good. There's two "shear points" there, the roll up a little curl of metal, the edges stay good (good for fresh cut tin...), and they're very handy.
The brand concerns me. It relies on hardened, precision ground cutting edges (kinda like scissors) that have to be good enough to survive however much tin you're cutting. I can say that if you have never used one, at the price of good ones, the version you linked to, at that price point, would be an EXCELLENT way to figure out if that TYPE of cutter is good for what you're doing. I can guarantee you that it is not the price that a good setup costs.
Probably in the Harbor Freight thread but don’t know how to search in a thread.
Go to the Harbor Freight thread. From the top(ish) of the page, over by your name and notifications, click the search box. In the top row, the search field (where you enter text), look right, it should say "Everywhere". Click that and look down to "this thread", and it will search "this thread".
here is also one of these scissor type tha chucks in the drill.
I don't care for any cutters (or most anything) that chucks into a drill to convert it to another tool. In the case of shears, that's not the answer. They're not steady, or they take two hands so the work isn't steady. The one you linked to which is built onto the drill, that's by far the better choice.