I just got my 2017 Xduro Trekking 4.0 a couple weeks ago at clearance pricing and am still making some changes and adjustments. Overall, I really like it.
My perspective is a bit different as I am 6'6" and got the 64cm bike. I have added a Suntour SP12-NCX suspension seatpost, but haven't gotten around to adjusting and testing it much. I also got a Weanas stem riser on Amazon and that has taken some weight off my wrists. The grips that came with the bike are pretty good, but I took the Ergon GP1 grips from my old bike and put them on. I had to build up the bars a little with tape to make the Ergon grips stable as the handlebar diameter is just slightly smaller on the ends than my old bike bars. I also switched out the seat for one I have been using for a while on my old bike.
After about 200 miles, I took off the Haibike rack and replaced it with the Topeak Explorer I had on my old bike. The Haibike rack didn't secure my Topeak EX trunk bag without bungee cords, which were inconvenient to deal with. Also, the lower bar for panniers put the panniers too close to my heels, causing occasional contact. The Haibike rack could support both the trunk bag and panniers, which the Topeak Explorer can't, but I ordered another pannier for when I need more space than one can handle. I'll use the panniers for commuting and just the trunk bag for shorter recreational rides.
I kept the fenders on, so, by replacing the rack, the back of the rear fender has nothing stabilizing it. It is just causing some rattling noise for now though. I'll drill a couple holes where it hits the end of the Topeak rack and secure it there. Also, I had to remove the rear light when I took off the Haibike rack, but I just use my old flashing rear light that clips on to the seat post, which works fine for me.
I also had a Topeak TourGuide DX handlebar bag that I wanted to move to the Haibike, but its mount (Fixer 8) doesn't fit with the Lupine front light and the wide mount for the Intuvia display. I tried using a bar extender, but that didn't work very well. I do see that there is a new Fixer 8E mount that is wider for Ebikes, so I'll probably try that. If the bag won't mount well due to the light, the light will win that conflict. I have been out a couple times in the dark and the Lupine light is way better than anything I have previously used.
For now, I'm using a cheap velcro strap mounted bag that isn't holding up well to the weight of the spare tube, tools and other things I keep there. It's also a bit cramped since it holds significantly less. It's workable for the short term, but I'd like to find something different.
I'm mostly using my bike for a 40 mile per day bike/bus commute and it is great for that. The weight of the the bike does cause some concern on the King County (WA) Metro bus bike racks though. After my first ride I added two 24 inch bungee cords to help secure the bike to the rack as all that weight isn't easily secured by one front wheel brace.
I ride mostly in Eco to conserve battery life and I have found a balance of the right gear to be able to pedal consistently after the first few days. At first, I was in too low a gear and the cadence was hard to maintain, though I was able go a bit faster that way. I got the Ebike to take the strain off my knees, mostly in climbing situations, but want to get as much exercise value out of riding as I can while avoiding strain.
I spent a bunch of time looking around at different models and the Xduro Trekking 4.0 checked all the boxes for me. I really wanted to get the Super Moto X tires on whatever bike I got. They have a great combination of performance and protection and I wanted a wide tire. The only thing that didn't work so well for me was the rack. I am still working out seat comfort tissues, but that should just need some more tweaking.