I just noticed my re-listen dates on this audiobook are both at the end of August. Apparently I get in the mood for this at the end of Summer (I think that's when I originally read the paperback too.)
Storywise, the same as the paperback obviously, nothing to add there. It's far from perfect, but sets up a great world. James Marsters is perfect for Harry he has exactly the right ratio of swagger to self-deprecation, but I get the feeling this was one of his first narrations (I could go look that up but I'm having an attack of lazy.) Sometimes his phrasing is a bit weird, and he has an annoying dialectal pronunciation of the word height that grates on me for irrational reasons involving an ex boyfriend.
Luckily he improves at the same rate Butcher's writing does as the series continues (and the word height doesn't actually appear enough times to make me rip my headphones off in frustration.) So overall, a good start to the series.