Thermals as outerwear - complete pants?

Thanks to Kanye West and David Beckham's collection for H&M, thermal underwear as outerwear is a thing. But would you wear long johns out and about? We on the fashion desk know how controversial tights can be. But those who feel the cold easily can take heart. Black tights may not have the fashion nod this winter, but thermals most certainly do. Think of it as the latest underwear-as-outerwear trend: thermals - those things usually hidden under clothes in subzero conditions - are now OK to wear ...