Having a 'Mirror' option when using Split Warp feature

It would be great/useful to have a ‘mirror’ option for the warp/split warp tool. I often need to retouch bottles to amend the shape to a specific mould/drawing for visuals, and it’s really fiddly having to change each side individually and try to match by eye.

It would be so much easier to have an automated warp which mirrored the manipulation in real time as you work. No more guess work or setting up a load of guides (which is still hit and miss!).

Thanks