This is not "hard" to do I just don't want to start a game with an opponent by seemingly suspecting him and arguing about the cards.
A game, even competitive, is supposed to be a relaxing and fun moment. That's why it's better to ask a neutral referee to have an up to date list of the errated cards and make a check at the begining of the tournament.
I mean a tournament in the Montreal area is likely to have 10 participants that's not a HUGE job if you have a checklist of errated cards.
At least the errated card list with changes should be displayed.
Of course someone can always bring two sets of cards but in this case he will take higher risks because cheating will be obvious.
I know that it's up to everyone to be aware of game developments thanks to the forum and that people should make the effort...I like to do it once a while just for the intellectual challenge of team and combo building.
But honestly the fun of Malifaux is its richness and variety.... That also makes it a huge task for the average player to follow all factions and model related rules discussions on the forum on a regular basis. I think it should be up to the henchman / referee to make sure basic developments such as use of v2 cards are applied during a tournament.
PS : just to make a few things clear. I'm a not a tournament player (and this kind of issue reinforces my taste for friendly non competitive games where you choose your opponent - not because they're weak but - because they're fair and fun).
I'm not criticising the game in itself for being errated and not being perfect. I've been playing miniature games for 18 years I know perfect games don't exist.
What I am pointing out is that, without some good habits, a tournament can give a wrong image of the game.
I mean if Wyrd took the time to improve their game and produce v2 cards + an updated, easy to use, rules manual then this kind of attitude (or mistakes) just ruins those efforts and are a prejudice for organised play and the reputation of Malifaux as a game.
My two cents.