Fitted. One went on very simply (1 tyre lever used, but stronger thumbs than mine wouldn’t have needed it, and inflated first time with a track pump), while the other was a little harder to inflate, but after a little fiddling with the bead it was fine.
Weight difference vs the Pirelli P-zero race tlr in a 28 is very unscientifically ~20g; the whole wheel unit has come up c.40g heavier, but I’ve topped up each wheel with an extra 20ml sealant. This corresponds pretty accurately to Pirelli’s claimed weight of 295g and Conti’s claimed 320. In any case, they’re trivially heavier.
They’ve come up just shy of 34. Just over 5mm clearance left up front, just about 4 at the back. I probably wouldn’t want to chance anything bigger at the back - the seat tube gap is the narrow point.