It's kinda no surprise this guy fronts a rock band. While the combination of a tie and a short-sleeve button-down can come off a bit Avril Lavigne faux-punk, one perhaps only needs the pedigree to back it up. (As for myself, I'd steer way clear of that particular combination.)
As far as the mismatching of shoes and belt debate going on, I have to agree that mismatching is often "plain tacky," indie folks being quite prone to it. However, shoes and a belt that contrast as much as these do aren't a particularly egregious example of mismatching, and it doesn't bother me in this case. Colors shouldn't be simplified down to just "brown" or "black." You feel me?
Question: Does not putting my two cents in immediately, or less commentary, encourage discussion?