I did it twice, one DNF and one succesfull one.
But its just nasty, because i had problems with the movement:fp
You have to practise the algs that you want to use for blindfolded solving so long, so you can do them really absolutely perfectly. Doing the square 1 blindfolded isnt really that hard. I would say, that a 4x4x4 BLD is harder, am i right???
Greetings, Dennis