Pan with one finger, scroll with the other

[tvooo]

I have an element within a ScrollView. I'd like to be able to drag and drop this element while also being able to still scroll within the ScrollView - with a different finger. So, pretty much like drag'n'drop works for most iOS apps, for example Apple Reminders.

So far, I've implemented the dragging using a PanGesture activated by a long press.

This blocks scrolling the ScrollView, but I've gotten that back to work using a NativeGesture and PanGesture()[...].simultaneousWithExternalGesture(nativeGesture). However, this now uses the same finger for dragging and scrolling. I'd like to use the finger that does the dragging only for the dragging, and any additional finger for scrolling.

How would I go about that?