We haven’t tried it but I can’t see any major problem - we’re well within the torque spec for the servo with our setup. You might consider using some weaker springs to reduce the down-force and we have used a small nylon or (better still) PTFE shim user the cam to reduce friction. The shim does help quite a lot - DM me your address if you’d like me to send you one.
The worst that can happen is that the lift servo fails and they aren’t difficult to replace - it’s an Emax ES08A and they cost around £4. I’ve just posted the guide here and this will help you fit your new cam too.
One other thought we’ve had is to use a mechanism similar to a napkin dispenser - mounted horizontally of course.
Let us know how it goes!
…rob