Ehh. Every boss I've ever worked for after my initial out-of-college gig has known that I interview regularly, once every quarter at least; it was never anything personal or because of dissatisfaction, just "I like networking and I like seeing how the trends in the market are evolving". I usually didn't wear a suit to those, though, for the other reason: tech people get weird about well-dressed people and think they're "fakes" or whatever.