You can try Sculpt or CrushStation with little / no Drive.
Sculpt: Filter Pre & Fiter Post to a select range of expression. Minimize the Envelope Follower influence.
CrushStation: Mids 100. Sweep a select range of Mid Freq with the expression pedal.
Not sure if you’ve fully explored the Bass Wah or Vocal types in Q-Wah. You can mold them into some more familiar tones. There are many ways in the H90 to achieve a wah sound – some “classic”; some well beyond that into uncharted territories.
