It looks like it's still a 1 1/8th steerer under the covers? Strange that they went from ~35mm WAM clearance on the 119 to this. 28mm is too small to clear a GP5K TT on 23 IW rims, so not sure I agree that it's "fine" - plenty of people will use these for long course or endurance cycling, and the extra width is certainly appreciated there.
Regardless, echoing Serge's comments: I was the TT119 guinea pig here, and I wouldn't buy another one.