BITD lots of British bikes came with 22" TTs, no matter what the ST length was. That worked well for us shorter folks with proportionally longer upper bodies than legs. I'm one of them, so my British frame can be setup to match my needs pretty easily. I feel like I'm sticking way out over the front wheel on square bikes with the right ST for my legs, and I don't like that feeling.
But I think I'm in a minority here. Square may be better for the average person.