Unique grip styles


Seemiller grip, very alien and exotic for me. Anyone here uses it? If yes, what makes it such an unpopular choice? Disadvantages?
Backhand sucks. If you push very strong backspin to the backhand, they have to use the anti-side to deal with that amount of spin.

They also almost have to open a rally with a forehand and resort to blocking on the backhand side.
 
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