I like that series, too, although it's not for everyone. And this baby, that never seems to interupt their quiet, philosophical life, is too much!!
I've just found another McCall Smith series that really isn't for everyone -- Portuguese Irregular Verbs. If you want to read a book where nothing happens for most of the book, this is it. But if you've been around academics and scholars, it is a hilarious spoof on them. (imagine the perfidy of someone who claims to be Dr Dr when you know he's just Dr!)