Aleph, hedging the grid with inverted pair would be great solution if you had profitable transaction on one pair and losers on the onther - this way you would balance equity and have constant gain, problem is you will have losing transaction on both pairs, so you double lose.
And grid theory has one big minus - you can never get rid of the losing opened positions. Never. Only thing you can do is pray, that price stays in defined range forever (say 0.8 - 1.5 for E/U), you've got reasonable grid and you trade for 20 years. Then, after 20 years you can close everything and have some profit. But what if price drops to 0.3 in next couple of years and then riches 4-5? Man, there's no force on earth that could make me trade with this system. Unless there is
