[brick]

When you check-out it changes the dynamic of the hand.
Now EP can make a decision without worrying if you would will check-raise because you aren't in the hand anymore. Or, LP may decide to raise a hand that he would have only called with hoping for an over call.

Or what if EP wanted to bluff because he put you on a draw.
So you check normally, he bets, now LP has to decide to call with an average hand with you still yet to act. So much tougher for him to call with a small pair.

Bottom line. By doing this you change the dynamic of the hand. Not cool.