Bought a CoC #3.5 a few days ago (one of the few gripper brands I can buy locally). It definitely feels heavier than my Standard adjustable set to RGC 175 (I closed these a few times between my legs, + chest crushed them to compare). So there is no point in MMS max efforting on it, at least not yet 🙂. If I don't count my Standard adjustables, these are the grippers to conquer (in order of difficulty):
1. Standard Cobalt RGC 165. I'm really close to this. I will MMS it within a month or two.
2. The all-steel Japanese gripper. Definitely heavier than my Cobalt, but most certainly below the #3.5
3. CoC #3.5
A few months ago, I found a guy who rates grippers here, and his ratings are within 1-2lb of Cannon's. I can live with that (it would be too expensive to ship 8 grippers to the US). I have a GHP #8 to arrive, then I'll get all my unrated grippers rated. Btw the guy grips 120kg on the GM150 at the bodyweight of 64kg/140lb 🙃🙃, he is the Number #1 in his weight class on grippermania.
Yes they are useful in training. I used to use a narrow gripper at the end of my workouts. If I did multiple sets. If my goal for the workout was to do 50 reps with a gripper and I got tired at the end I dropped down to a narrow gripper to finish all reps. Just removing the setting part to make it a bit easier. That way I did not have to drop down much in resistance on the actual closing part.
Surely that can be used to our advantage, if the gripper only ramps up right at the end range. They can be used to building closing strength, also people who aren't able to get a choked gripper could possibly use a HG for that purpose.