I agree with not making our kids be sneaky. Who knows how the mind works? If we are telling these kids it is alright to sneak snacks in at these ages, who's to say that as teens they subconsciously think it is ok to sneak in something other than food? Know what I am saying?
I have spent a lot of time teaching my kids right from wrong and I am not going to tell them it's ok to cheat here and there occaisionally.
To be honest with you, I am a little concerned that someone in authority is making that suggestion in the first place.