have you compared the clarity of the Tethys vs the Icarez?
it sounds like iCarez has some quality control issues, but in my experience and those shared above, their customer service makes it right. i had problems with my first set, and they promptly sent me another set which installed properly (at least one of them did).
i'm really pleased with my final installation. it doesn't look like i have a screen protector at all, and thus far, the 2.5D has played well with all of my existing cases: Caudabe Sheath, Silk Base Grip, and Speck Presidio Grip. i also tried it with an Otterbox Symmetry and UAG (can't recall model) at the store and it was fine with these as well.