On all the rigs with one coil I have looked at, they did seperate the bands, and the higher frequencies are wide spaced......
The reason for that is twofold. One is to maintain a useable Q with a lower inductance and the other is to be able to resonate with the minimum Tune, tube, and stray C available. On 10M its also easier to have a wide spaced 3-4 turn coil than try and find the exact tap on 1-2 close turns. The Heath SB-200/220 series are well known examples which barely make 10M and some need the coil stretched a bit for the high end of the band.
Carl
KM1H