SQ6 has arrived, spending some time getting the new reduced-knob-count PEQ layout. It seems to work pretty well, I like it.
What seems natural (and fast) for multiband adjustments is to leave my right hand in place, twiddle the knobs with my thumb and forefinger, and use my pinky to select the active band.
The only issue is that when doing this, the band select LEDs are obscured by your hand, and if you want to keep your eyes on the touchscreen, there is no feedback *on the screen* as to which band is active. It would seem reasonable to change the appearance of the selected band’s spline point, or perhaps the whole band’s curve display, perhaps by fattening it up by a pixel or two.