I came to The Rigby late night on a Friday and was greeted to an empty bar. Honestly, I was kind of pumped - my companion and I wanted to talk and we could actually hear each other / have free run of the jukebox. In talking to the super friendly and attentive (but not invasive) bartender it sounds like it's not uncommon for the crowd to wax and wane there over the course of the evening; we'd just missed a large group leaving and were later greeted by a large crew shortly before bar time.
Generally I'd say The Rigby is a pretty average bar with an above-average bartender. He made me feel welcome and not just like someone he'd be handing a check to in an hour.