I'm currently an economics MA student in Ontario. I like econ, and I'm thinking of applying for a PhD in the subject. However I've also been thinking it might be more fun to do something a bit more applied with my life, such as do a Phd in urban planning. But what I'm curious about is how useful this degree would be. Obviously it is more applicable material, but I have no experience in planning, and I don't really know what I would do with the degree once finished. Still, it really does sound like more fun than economics.
So what do the planning PhD's do? Is this something people usually only get after several years of actual planning work? Sorry for the noob q's, and any advice is appreciated.