A few of these showed up for sale recently, from a seller in the Portland Oregon area:

It's a standard vanilla MP600 Pro Scout, with soft squishy black rubber grips on the sides of each handle. The grips are apparently just held on with adhesive, like a decal of some sort. They are contoured perfectly to match the shape of the handle, with cutouts for the thumb notches and the sliding lock releases.

Despite being such a perfect fit, I wasn't sure if the grips were genuine Gerber, or perhaps just a very well done aftermarket add-on..?

But whilst at the Shot Show, we spoke with one of the Gerber engineers, who confirmed that these were a concept they played around with back in the mid-2000's.



We didn't ask, but it was not very hard to figure out why the idea didn't go anywhere. The rubber grips add a fair amount of width to the tool, making it rather fat to carry. And the rubber itself is so soft; it makes the tool "catchy" when you try to slide it into a sheath or your pocket.
And to be honest, I never felt the MP600 was all that uncomfortable to use
without the rubber grips.

So yeah, no surprise that these never made it out into the marketplace.