This is a small pen. It has a good build quality, and a very good nib (I ordered the stub).
I expected it to be the size of the Aurora 88 Minerali series offered earlier on Massdrop, but this pen is definitely a LOT smaller than the Minerali. The size difference was not clear from the measurements given in the specifications.
I prefer a grip diameter of at least 10 mm (0.4 in). The grip diameter tapers from 8.4mm to 9.8mm at the body.
If I could give it 2.5 stars, I would.
The pen is overpriced for my personal preferences, especially for a cartridge (i.e. non-piston) filler.