I didn't realize this was a collection of short stories until about three short stories in! Before that I was very confused. But it turns out that short stories are the right length for Dortmunder; he's sorta fun, but quickly loses his welcome --- so lots of short little scenarios are the perfect medium.
Some of these are quite good, others are not. All in all it's not an amazing read, but if you're in it this deep, you might as well.