ill be able to give some details by the end of the month. just got myself two.
It's pretty thin. It's ok if you are trying to keep your grip size down but i'd recommend using the thicker TW or Volkl leather grips since they are thicker and more high quality. the Gamma is pretty close to just having an overgrip on the handle.
I noticed the newest Gamma leather grip is darker in color and slightly thicker as well...