Oh we have the same bb. I also ordered ztto like that. But since my last ztto bb (bsa) on my mtb didn't last that long really, I'm inclined to using good ol' shimano plastic one. I really am not sure yet. Will decide on the spot I think.
Tell me, how do you find the bb shell quality, tolerances etc...? I haven't worked with pressfit shells, only bsa. Seems pf bb's have higher tendency for creak development. Also, did you use any grease?