Which makes the whole "precise strike with a shield" issue valid.
Except it isn't valid at all. Again, the rules are quite clear. The bonus attacks you get for using a second weapon CANNOT be used for a precise attack. Doesn't matter what hand is primary and which is the 'off-hand'. Stop dancing around the terminology. If your using sword & board, your getting ONE precise attack only, same as if you were using sword & dagger.