No, but it sure looks great! And practical, with that enclosure and those elastic bands providing quick access, although I'm not sure those wouldn't take something away from That Leather Feel I'm so yearning for... Or how well it would protect bodies from scratches and pencil tips from breakage, given the "open" design compared to Saki. But I'd like to own one, regardless! Actually, I'd like one of these Charles cases from this drop too but a bit strapped for cash at the moment!
Would be cool to see a drop for some of those, although I personally already have one of each version except the P-661.
edit: Created a poll for them: https://www.massdrop.com/vote/saki-roll-pen-cases