The part that tamps is threaded, so you just can adjust the depth of it. The whole thing is pretty weighty though and seems well made. Costs about 10% of the proper OCD one and I'd imagine works just as well.
The original concept was indeed just to use it to level out the grinds, but it actually tamps at the same time so I've stopped bothering with an after-tamp. I've been getting really good, even extractions since I started using it. More importantly though, my missus, who also uses the coffee gear and has a tendency to mess with the grind dial when she pulls a bad coffee, has been getting much better results. It essentially removes another variable from the process.
The original concept was indeed just to use it to level out the grinds, but it actually tamps at the same time so I've stopped bothering with an after-tamp. I've been getting really good, even extractions since I started using it. More importantly though, my missus, who also uses the coffee gear and has a tendency to mess with the grind dial when she pulls a bad coffee, has been getting much better results. It essentially removes another variable from the process.