Earlier quoted context omitted.
It's true that it's an awkward entry point, but it's not necessarily a bad one. It's the worst book of the series imo, so if I wanted someone to read the whole series I wouldn't start them there. But it also covers events that are directly or indirectly significant to the plot or setting of... most... of the other books. So if you are going to read them all, you get more out of the rest for having read it first.
Good to hear you think its one of the weaker ones, I didn't love it personally. (I thought the setting was awesome but struggled a little bit with the motivations of most of the characters). I've heard enough good things about the series however to know I am going to read most/all of them! Which book if your favorite?
Surface Detail also really stuck with me for its unique conflict & setting. It's about a war over the fates of people unwillingly uploaded into a simulation of hell after their deaths. With the soldiers being continually "reincarnated" back into different iterations of the same fight. Banks has a really unsettling edge to a lot of his stuff that is just barely kept out of view in a lot of the culture books, but this one he just lets it rip and it's very effective.