I have played a couple of times and I left it in on putts over 10 feet or so.
I like the new rule and I think it will probably speed up play for our regular fourball, weekend play.
Speaking of that, I wanted to rant about something I heard Brandel Chambliss say. Usually I like to hear his opinions, but he said that the new flagstick rule was only to make golf easier and the pros don't like it because of that. Making the game easier was not what the USGA was trying to do; it was to simplify the rules and hopefully speed up play a bit. But his comment was just one more example of someone focusing on the pro game to the exclusion of those of us who play golf for fun. As has been said regularly on here, the pros are less than .0001% of golf, and I hate to see people focus on them when they comment on rules, architecture, equipment or whatever. They are not what really matters to golf!!