Airborne Combat Engineer has an in-depth comment from a 101st Airborne soldier who’s worn the new ACU in the field. In a nutshell: He’s not impressed.
The ACU is NOT a field uniform. Its advantages in maintenance are all for the garrison soldier. The fabric is thin and it tears easily, especially around the knees when you’re pulling security.
The uniform’s feature that has drawn the most criticism (at least among us armchair general types) has been the digital camo pattern, but the commenter has no problems with that. He just doesn’t think the uniform is up to the test of being used in the field.
And that’s a bad, bad thing. Go read the whole thing.