Not to derail, but that’s a rather narrow view of work positioning. There are many trees that I can navigate faster with ddrt than with srt, and vice versa.
To the OP- that’s a versatile setup you have; enjoy! As for threading mine, I try to leave it on its dedicated line as much as possible. You will probably find it the most efficient overall, as you can sync your setups around it easily with a little forethought and practice. It can quickly become second nature.
Some tips:
when installing a canopy anchor, use your spliced end to cinch, and attach a second line to the splice for retrieval.This method allows easy transition to ddrt if desired, and gives you maximum rope length for redirects if climbing srt.
If basal anchoring, use your spliced end as the anchor, so that it’s above your device if you switch to ddrt.
These methods only matter if you prefer using the splice for ddrt. Otherwise, carry on and have fun with your new smooth ride.