Fine, practical... bad choice of words... but I personally don't like those kind of bars because the flats aren't that comfortable to me and the position of the sides aren't that great either. TT is even more about aerodynamic than track and even less about comfort than track. I'd do with some good'ol syntace bullhorns with a nice bend to it so you have more positions. Go to a shop that sell TT bars and see how you like them, maybe you'll like them more than me.