Never heard of the IGNAZ X. Very good looking bicycle. It looks like it has a roller cam internal brake that Shimano equipped their Nexus hubs with back in the day. I would be careful of this brake on long hard downhills especially in mountainous terrain. I've owned a Nexus 7 speed IGH with the roller brake and the brake was not a powerful brake by any means. However you have a very mountain capable brake in the front cantilever brake so I would take this bike into the mountains. The Nexus 7 speed hub always shifted beautifully. The shifting mechanism wears out after a period of years of steady use and I've had to throw away two Nexus 7 speed hubs. I could find no repair people anywhere that wanted to tackle the shifting mechanism. By the way I used to take my hubs apart a lot after the shifters started acting up. They are really no more difficult to take apart than Sturmey Archer 3 speeds. They do have more parts but they all go back together in a logical manner. The rotary shifting mechanism on the other hand is chock full of parts and very small for all the torque loads that go through it. I never took the shifting mechanism apart and that was where the wear that caused the hubs demise occurred.