There was a very funny movie by Pedro Almodóvar (not sure which, it was 20 years ago or so; perhaps Mujeres al borde de un ataque de nervios) where a woman caretaker (janitor) who was asked to lie said something like: "You know I'm a JW, we Witnesses cannot lie, otherwise I would have been pleased to do it of course." Sort of sums it up nicely.
It's amazing how a Witness mind can harbor both extreme scruples and dishonesty; once when I was a young pioneer I gave a phone call from a call box that (miraculously) worked and returned the money... believe it or not (in France that's almost unbelievable), I felt obliged to go to the post office the next day, tell about the anomaly and offer to pay for the call (I won't forget the stare or the post employee)! And at the same time no scruple about "intellectual honesty" ever came to my mind as I presented the most twisted WT arguments...
That's the problem when honesty is dependent on a cause; you can be over-honest or utterly dishonest without even noticing the difference as long as both attitudes are consistently construed as required by the cause. Your real "virtue" is not honesty but loyalty.