4K Review: Mateba 6 Unica semi-auto revolver

This is a redo of my shameful review of the Mateba 6 Unica from 5 years ago, this time in high-res 4K. These innovative revolvers have a unique semi-automatic mechanism that cocks the hammer for you. Are these really worth the $3000 (and more) they command at auction these days, or are they just a silly gimmick "answer to a question nobody asked" like I hear all too often?