BlackJack Switch

[FMMonty]

I was playing a new game yesterday called blackjack switch

I was wondering, how bad are the odds against the house, anyone know?

The rules of the game are:

1. You must play two boxes with equal stake
2. You have the choice of switching the top cards from box A to box B
3. if the dealer hits 22, both boxes push regardless if the player has gone bust or not, unless the player has black jack where he will get paid even money
4. BlackJack plays even money
5. Dealer does not hit soft 17, no surrender, double anything, split anything and as many times as you wish.

Anyone played this? Know the odds?

Or even perfect strategy play,