Hello
I completely agree with you, it would take a serious disaster for this EA to
margin 
out, I would have to say this is one of the safest EA's I have seen and demoed, It's not the most exciting EA to watch but hey that's the beauty of this EA, it just keeps chugging along making money.
As mentioned before my only small concern was the negative
swap 
that builds up, but guess when it starts buying you get positive
swap 
..
PS: FXPRO has positive
swap 
on the sell on this pair, just an FYI