Positives: Feels like a solid tool. The most non-slip grip on the market, without sacrificing comfort. High-quality feel of materials. Top control and stability (also because of the large weight).
Negatives: Rotring graphite leads are the worst in terms of quality. In addition, because it is not a clutch/lead holder type pencil but an incremental advance type (i.e. the lead comes out little by little with each click, not all at once), the lead is not stable, meaning it "wiggles" a little. The best 2mm leads in all the extensive tests I did (control/precision, shading, etc.) were the TK 9071 by Faber Castell.

P.S. For technical/freehand drawing, I recommend Faber Castell TK4600 and TK9400 + Faber Castell TK9071 leads. For writing, Pentel Kerry, 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 leads. I prefer the Rapid Pro 2mm for sketching on the go; it is versatile in use, meaning it does everything quite well. So if I can carry only one pencil that can do both sketching and writing, the Rapid Pro 2mm is top in that case!