Secret Weapon Style Add On Grip Machine

[MARKR]

I was thinking about getting a new grip machine but i also would like a secret weapon aswell.

Can the benefits of a secret weapon be built into a regular grip machine?

I was looking at the G-Rex grip machine with the negative gripper style handles built on and was wondering how similar would this be to a secret weapon? Obviously your not getting any leverage from an extended handle but the negative element is still there.

This would just mean having just one machine rather than two.If anyone has this style of machine i would be gratefull for some input

Thanks Mark