I flicked through the forum, it seems not many people use/talk about the 18-135mm. i'm currently using 16-50mm XC on my XE1 and found it to be a beautiful match (definitely more than my leica collection). but if i were to grow the system, then may be adding a 10-24mm and replace the 16-50mm with 18-135mm... but apart from initial review and test shots, I haven;t found much.
could it be down to the price? but i thought a lot of X-T1 was sold with 18-135mm discount voucher, no one took up the offer? or are they still travelling and hasn't come back yet?