Great to find some Sloan fans. They do in fact rock! They are on tour this summer, at least in Canada I think.
Seth, now that I've got Sloan in your mind, how about Marah? They are playing on the EastCoast again, opening for the DBT in Philly and playing in NYC over the summer.
Are they a big enough band for the club? Saw them open for Steve Earle a few years ago, thought they were great. They may be an Iota/Black Cat size show if they are headlining though.