I have used many sprue cutters from a lot of different companies, all with different designs, for many years, and this is the first time I have tried this design. I was a little skeptical at first, but these have turned out to be quite nice.
The tweezer design is nice and easy to hold. The ergonomic design makes them very user-friendly. I love the way the head is shaped, the extension of the cutting head making it easy to fit into tight spots. The cutting heads are very sharp, so beware.
As for using, just put the head against the part you want to cut off and squeeze. You get a nice clean cut with very little cleanup afterwards. This works great for small parts. When it comes to the larger ones, you really have to squeeze, and I mean squeeze, hard. I had to resort to my other cutters for these.