Launcher Grip BX-30
Accessory: Launcher Grip (BX-30)
Comes with more grip for the hand so there is more dexterity when holding the launcher grip.
Feels like holding a nice bulky TV remote.
Overall
It is personal preference, if you prefer something else to grip when launching, then get it if not, doesn't matter. However, if we are just comparing to the original launcher grips, then you get the benefit of a more comfortable setup.
Gallery
(Different arrangements you can have depending on how you sort the pieces; it doesn't matter, just if you find it comfy).