Ok first off, yeah it's everything that people have said cornily enough. I'm a cynic about marketing, but in this case they're dead on.
I'm a big guy 18st and I work with swords some and staff work-so macho like I expected to hold onto it and do well. I can barely hold it.
I don't have sufficient grip to work the rest of the forearm at under 7k rpm! yet. :-) my thumb and fingers are giving up first..along with my shoulder!? erk..using straight arm here.
Fingers quivering whilst typing.
Appears to work well.:-)