If you try to break my wrist, I'll certainly break your ribs. It's almost automatic. In a fight for your life, that's a terrible trade - and it's doubtful you'll get the wrist break.
As I said in the orginal post the whole thing is predicated on them trying to maintain their posture and being as static as possible to resist being thrown. If you can get yourself into a position to lock the wrist up smacking it hard enough to break shouldn't be an issue.
And if they're being static and resisting they've handed over the iniative, you should be able to get your follow up in before they can effectively respond.
Anywho my only point was that resistance in techniques is bad in the dojo but useful in an actual situation.