Received S01 today, very pleased, no apparent issues, leather band color was darker and matched the 02 band in the photos, which I prefer, quality and finish including the storage box all exceed the price point of this timepiece - great value. The rotor does make a little noise as other had commented, and the warranty card was not stamped & dated.
it's not much thicker than a Seiko 5 on a NATO strap.
Love the watch, Thank you Massdrop.