I'm going to be honest: I absolutely despise it. Rear looks awful, proportions are off, but also - and more importantly - the original X1 just looks so right, so timeless that you really shouldn't mess with it.
I like the windscreen a lot, but the tank is so long, and the tail doesn't do it for me. That being said... I've always thought the X1 looked clumpy and disproportioned, so it hasn't really gotten any better or worse from the original haha. The S1 was really the sweet spot.