I purchased a Riese & Müller Supercharger GT Nuvinci HS in April 2018 and started a touring journey from Paris, France. I am now in India having cycled 21,000 miles/34,000 kms in 28 countries. I wanted to share my feelings about the ebike.
In addition to the 2 500W Bosch Powertube batteries, I purchased 2 additional batteries that I carry in my Ortlieb paniers. It gives me a range of more than 130 miles/210 kms.
I recharge the batteries when I reach the hotel. It takes about 3 hours and 15 minutes for each battery to recharge fully when empty.
The main issue I had is that the Bosch motor broke down after 19,000 miles/30,000 kms. It happened after crossing the Pamir, Karakoram, Kashmir and Ladakh mountainous area. I crossed several high altitude passes at an elevation of up to 17,580 feet/5359 m. I had hundreds of miles of unpaved roads in this area. The Bosch motor was under warranty and they replaced it for free. At this time, in the South of India, the ebike has no issue at all. The Schwalbe Super moto tyres are impressive. Only 4 flat tyres in the entire journey. I changed them for the first time at 11,000 miles/18,000 kms to be safe but they could have lasted longer.
I have been very happy with the ebiike and do not regret my purchase.
I will be happy to answer your questions.
Here is the website about my journey with a map and some pictures:
https://www.ebikejourney.com/