I had three shaves with the Karve so far, every time with a different plate: D-E-F. To make things more interesting, I did parallel shaves against Rockwell, Timeless 0.95 SB and Blackbird SB. I must say I'm very pleased with Karve, it held it's own against razor I'm more familiar with so I've made a few observations.
Karve D vs Rockwell on 6 - Very similar, both are smooth, yet Rockwell gave me a bit closer results. Rockwell also felt a bit smoother but that may be because I'm very familiar with that razor. I feel the Karve is a bit more picky about the angle and that it likes it shallow. I will revisit these two again next week.
Karve E vs Timeless - For me, these two feel about the same in terms of aggression. I paid more attention to the angle with Karve and when you get the angle right, Karve is smooth as butter. The results were very close between the two, Timeless was a bit more efficient on the cheeks, Karve performed better on my neck.
Karve F vs Blackbird - I figured the most aggressive F plate would be best paired with the Blackbird and indeed, both felt similar, yet different enough. You can definitely feel a step up in aggressiveness with the F plate, but the blade feel is still not on the level of Blackbird. On ATG Karve felt smoother while Blackbird gave better feedback - which is no surprise since it's one of the highlights of this unique razor. In the end, Karve left me with a few weepers but the results were also in its favor, not by much though. I will revisit this again, hopefully with some other blades, as the two new Nacets proved a bit too much for such aggressive razors.