Yeah, but I much prefer a 3-piece because I just scoop out of the grinder catch. It can sit in there, just like on
@Vitolo 's tin, but that tin is just one more step, and one more way to lose keif.
Also, I have less control over the consistency of the herb with a 2-piece than I do with a 3-piece, which has holes that don't allow herb through till it's the right size.
Furthermore...I don't like grinding upside down in a grinder at all. If I feel the need to do that, then it means that I don't have the right grinder (or the right grinding plate) for my needs, and I'm just making my grinder dirtier than I should have to.