It should be a trend. I've been wearing a crossbody small bag (I guess you could call it a fanny pack, technically) for a long time now and ever since I've gotten a smartwatch I rarely need to take my phone out, so it lives in the bag instead of a bulge in my pants pocket. I wear the bag in the front so when I do need my phone it's just as quick to pull out of the bag as my pants pocket.