With PinchBar you can hold down CMD or ALT while pinching for vertical or waveform zoom as suggested in this feature-request . All modifier modes and their sensitivities are customizable via Terminal, but I haven’t documented that yet.
Pinching for horizontal zoom is working fine, but CMD or ALT while pinching for vertical zoom is not working on my system (macOS 12.6.2, Cubase 12). Do I need to do something to configure it?