To Buy or not to Buy?
Cleveland came out with the 'niblick' which is still available from select stores (such as Amazon). It is a 49 degree wedge and looks like a regular iron. The purpose of a chipper is to make it easy to chip a ball using a putting stroke. I can't tell you how many golfers struggle with chipping with a regular wedge. It's easy to scald the ball when the lies are tight or chip it fat when you come down too steep.
A chipper makes it easy to launch the ball in the air using a putting stroke. Now, I know it sounds like you're cheating yourself but when it comes to fast play, I'm all for it. I have seen so many golfers struggle and be frustrated around the greens just trying to get the ball on the dancing floor.
Cleveland and other manufacturers figure that everyone can execute a putting stroke and so they invented the chipper. If you struggle with chipping then get a chipper for your bag. It will speed up play but it won't make you a better golfer. If you are willing to spend time practicing your technique, you can develop your chipping with an iron. Some people just want to get the ball on the green and move on. They just want to speed up play and not get frustrated in the rough. It is the result they care for, so let them have a chipper and let them on the green faster.