Can't comment on the failzero.
TiN coating has been used for a while. Sadlak makes some parts for the M14/M1A varient rifles and TiN coats the pistons. From all accounts, not mine, they get dirty in the same manner as hard chromed pistons they just wipe off easier. I understand the principal behind it I just think it sounds like one of those too good to be true type products.