It's going to be a brighter sound. That's why they make 'no load' tone pots where the pot (and therefore the capacitor) are taken out of circuit when turned up to 10, and the pot is only brought into play when the pot is turned down to 9 or less.

If the sound is too bright without the pot, you can always wire a 240k or 270k resistor and a 0.047uF cap in series between the output and ground to simulate the effect of a tone pot set to 10.