155 bases out of 192 tries last I saw, probably more by now. He obviously gets on base to try that many steals. I wouldn't be surprised to see a call-up.
I just looked and saw this from yesterday: in 132 games, the switch-hitting Hamilton batted .311 with a .410 on-base percentage, 86 walks and 113 strikeouts.
If I'm the Reds and he doesn't have to be protected on the 40-man roster, I'm calling him up and PRing him every game. Just being on the basepaths would be a huge distraction. With an 80% success rate (would almost certainly dip in the majors though), might as well let him have the green light too.