I have a gm grip applicator, and it's broken. Or a presume it is.
When I first got it it would only work on high quality grips(I.e ones that haven't got holes in, low quality grips can be porous)
But after about ten grips, it mo long holds suction as in the video. Which gets annoying.
Two of my local sports shops have a similar set up, except it's a see through tube, attacked to an electric vacuum pump. Apply grip as in video. Press a but and it sucks it in.
I need to find out where you get this from, or atleast make my own!