At least my personal experience with a lot of different tires, lower and higher tpi (including Continental and Vittoria) was that higher tpi tires (open tubulars) were always feeling much better even with cheap butyl tubes.
Sure. One thing to keep in mind though is that Continental doesn't count TPI the same way Vittoria or say, Veloflex does.
Anything truly "Open Tubular" usually comes with a relatively high (true) TPI count. IME the difference of using a latex or butyl inner tube with those tyres is very obvious.
With lowish TPI count tyrees (clincher mostly) the effect of the latex inner tube will be masked to insignifance by the stiffness of the sidewalls. Hence pretty useless bar the occasional weight savings.