I haven't read it in a long time, but IIRC I skimmed the good parts once, then read the whole thing, then at a later point I skimmed the good parts again.
I love The Immortal Coil. I'm still pissed by the fate of a certain character from TIC who returned in one of the Cold Equations books.
Just because I'm a nitpicker about such things, let it be noted that the title is Immortal Coil, not "The Immortal Coil."
It's a play on Hamlet's line "When we have shuffled off this mortal coil," so there's no "the" involved. ("Coil" in Shakespeare's time meant fuss, ado, turmoil, trouble, so "mortal coil" means the troubles that come with living. Also known as the slings and arrows of outrageous fortune, a sea of troubles, the heartache and the thousand natural shocks that flesh is heir to, etc. Okay, Hamlet, life sucks, we get it.)