Interesting. ICC, ATT/Lucent/Avaya, Ortronics, Suttle and even Leviton provide instructions right on the packaging showing the use of the caps to terminate the wires.
What do you squeeze them with?
And they also provide that little plastic tool with wall jacks for the 630 connector. Don't forget who these guys target their products for. Pros are going to know better, DIYers won't have the correct tool and will need something like that. Hey, it's better than a screwdriver blade.