@pmonks@sfba.social @mkroehnert@social.tchncs.de That's a good list, although your two thoughts ended up being six
I've thought a bit about the idea of using two different devices. I was about to pull the trigger on a CAMP Lift, but I wasn't convinced of its safety given its tendency to no longer engage when grabbed or tilted (against a rock perhaps?) — additionally most rope soloists who climb with progress capture devices (again, talking North America) seem to go with the double-trax, which also doesn't satisfy the "two different devices" constraint.
I will have an ascender (a tibloc + PAS) and a descender (Mammut Smart).
As for rope protection, I was planning on re-fixing often so as to not worry (too much) about edge protection.
Lastly, will be running all of this on my garage anchor board to get all these new skills (and devices!) tested for real before I get out on rock!