There is no reason you can’t have your favorite regular grip on a putter. In fact, some people thrive with iron grips on their putter.
However, putter grips were made specifically to try and give you an edge on putting. Features such as the flat edge are illegal on irons and woods but help you align correctly to your aiming point with the putter. The larger grips commonly found on putters help steady your hands and encourage a smoother stroke.
At the end of the day it all comes down to confidence. Use whatever grip gives you the most confident to drain every putt you will encounter. There are plenty of variables on golf grips worth researching, make sure you have checked out every variable before buying your next putter grip.
Pros and Cons of using REgular Grip on Putter
There is no right or wrong answer on what grip to use. Putting all comes down to confidence and the ability to be able to hit your line with the correct speed. I’ve seen golfers be better putters with a $20 Walmart putter than some guys using the latest Scotty Cameron!
You may have to experiment with several types of grips (style, size, etc.). A grip may feel great on a mallet putter but it may feel absolute awful on a blade putter. Being comfortable over a putt is the main thing you are looking for when finding the perfect grip for your putter.
Being comfortable over a putt gives you confidence. Confidence allows you to have an aggressive putting stroke versus a tentative one which most likely leads to steering the putter face through impact. This leads to accuracy and consistency issues.
Do any pros use a round grip on their putter?
I have never seen a pro golfer use a regular grip on their regular length putter. However, I have seen several pros like Adam Scott and Webb Simpson use round grips on long putters (aka belly putters).
An interesting putting test from MyGolfSpy showed that out of 5 styles and sizes of putter grips, the round grip led to the best face angle and path, but was middle of the path when it came to percentage of putts made.
This study is most likely misleading as the golfers tested most likely never putted with a standard round grip. I found it fascinating though that the round grip led to the best face angle and path at impact. It sounds like experimenting with a round grip may be worth it, especially if you can get the feel down. Who knows, maybe it will transcend your putting and you can be touted as the best putter out of your foursome!