You should have ordered the 1.5 as well. The Jump from one to two is alot at first. After I ordered the 2 I thought damn this is going to take forever. I'm working on 3 now By doing sets of the 2 for time reps of 3sec paused with the 2 grip.
Yes if your a good size biger and stronger than the other guy you can crush his hand. But then the next question is where will his other hand, elbow, foot be at while your squeezing his hand, hopefully not flying at your head.