The new Hornby sounds good. Personally, I am doing a mini blogothon on Coupland's latest, and will be posting as I read it.
Both authors are similar in some respects - they take on unique (though often shifting) perspectives that reflect very contemporary themes. Like Kerouac, they are very much products of their time. Many of their pop-culture references are so embedded in our present context that they may be lost on future readers.
Anyways, I would like to hear your thoughts on The Gum Thief when you finish.