My DH has two, and the more worn one has definitely developed pilling issues. However, DH is very hard on his clothing and this one was worn over and under coats fairly relentlessly. I think the amount of pilling is related to how much friction the scarf is exposed to--if you take pains to keep it above/on top of your jacket it will fare better. HTH.
There is a cotton version too, if you don't want to invest fully. It's a third of the price of the silk and cashmere version, so you can test the style with the cotton version and then buy the silk and cashmere if you really love it!