I'm generally wondering what the consensus on these. I've been doing research since I'd like to improve finger independence/speed while at work and I've seen a bunch of differing opinions. Including; they don't work, they work great, they cause carpel tunnel, they don't actually work the right muscles since you don't hold it the same way you hold a guitar, better to use a stress ball/do chin ups, or do general finger independence stuff without a tool.

Wanted to see what you guys think and what experiences you've had with different tools/methods for finger independence, speed, and strength while away from the guitar. Obviously nothing beats playing but it's not always practical.

Regards, 9apps cartoon hd