Good for low usage
The big deal with these: you need to step out of your binding to attach them... it can be difficult to put them on when you most need them.
There are ski crampons that you can attach to the bar on your bindings in the morning and they can rotate out of the way. Then when you need to use them, you can just use your pole to rotate the crampon into place. A lot easier if you're going to be using the crampons on and off.
These crampons are nice and lightweight. They got the job done well.