Well, the hard part is to switch niches after you're experienced (and bored) in one niche... i.e. you work in web dev now, but will you be able to get a job in Aerospace or custom CAD software building?
I think if a company is coming to my college for offering jobs, it's highly likely that I'll only be offered web development positions. Unless I do something else to prove that I can do well in other fields as well.
