I liked it, but couldn't bring myself to finish it once I realized that Sly's character literally only ever hurt people. It felt like it was supposed to be "old man, set in his ways, criminal, doesn't know how to live in this world, says the wrong thing, but has principles, does the right thing."
But in the end it was just "old man, set in his ways, criminal, doesn't know how to live in this world, says the wrong thing, but has principles, but he's still an asshole and makes everything worse all the time, and of course he does, he's a criminal and a jackass."
It's still fun to watch him go Mike Ehrmantrout on a situation, but Mike's plans usually end well for the people he's helping.