Positives: Feels like a sturdy tool. The best anti-slip grip on the market, without sacrificing comfort. Quality feel of materials. Top-notch control and stability (due to the large weight).
Negatives: The graphite tips from Rotring are the worst in quality. Additionally, since it is not a clutch/lead holder pencil but an incremental advance type (the tip comes out little by little with each click, not all at once), the tip is not stable, meaning it "wobbles." This kills all the precision that a pencil could have, as this should be its advantage. The only tips that fit perfectly are the tips from Faber Castell 9000 wooden pencils. (I tried even Kitaboshi Japanese ones and of course all the well-known brands. The Staedtler Mars Carbon 2mm are the thickest, but even they do not fit as perfectly as the solution I mentioned earlier. (I discovered this through a lot of experimentation, but later found out that others also strip wooden pencils to solve the problem. The average user won't notice, but the difference in how beautifully and correctly the pencil writes and draws is huge.
P.S. For Technical/Free drawing, I recommend Faber Castell TK4600 and TK9400 + Faber Castell TK9071 tips. For writing, Kaweco Special or for a budget option, the Koh-I-Noor 5900. For sketching, Koh-I-Noor 5340 (5.6mm). For linework, Pentel Graphgear 500 0.5mm and Pentel Ain Stein HB/2B tips. I prefer the Rapid Pro 2mm for sketching on the go; it is versatile in use, meaning it does everything quite well.