Have you read the other Alexander McCall Smith books - the Isabel Dalhousie ones? I loved the No.1 Ladies Detective Agency novels so I got the Sunday Philosophy Club and hated it. It didn't feel like it was written by the same person, felt rather Aga Saga-ish - didn't warm to Isabel Dalhousie at all, in fact she irritated me enormously (like the bit about being made coffee and trying to drink it to be polite even though it was - horrors - instant).
Bring back Mma Ramotswe!
Anyone tried any of his others - the 2 and a Half Pillars of Wisdom, or At the Villa of Reduced Circumstances?
And are the Akimbo series of books for kids?