Yes, I believe kilts are set to become mainstream mens wear within the next few years. Now that most women have taken to wearing trousers, skirt like garments for men such as non-traditional kilts are no longer perceived as effeminate. There will still be traditional wool tartan kilts, maybe more common than at present, but I think the big growth area will be in the likes of Utilikilts and single colour lightweight polycotton kilts.