Do you use the non listed pipe as a raceway system , able to repull after installation? or as a sleeve protection with buried ends? BTW you don't go to hell for non compliant piping. I use sch 40 pvc for my above ground sprinkler system mounted on the fence.
It is a complete system but only because it doesn't do much good to sleeve most of the pipe and but leave the ends exposed. We put elbows on the ends and turn up to emerge with schedule 80. Pulling is either slide the pipe over the conductors laid out on the ground or bury the pipe but pull before completing the ends so you don't have any elbows to pull around.
I remember one time we had a direct bury line near some grain storage bins that kept getting rodent damage and after a couple repairs in a relatively short time we decided to sleeve it in some pipe maybe 20-30 feet out from the area that seemed to be a problem. Wasn't all that long and next failure was just beyond the sleeve - that one was ultimately replaced for the entire length of the run.
Couple years ago I had a line to an irrigation well that lost a phase - direct bury conductors. Had a little trouble pinpointing where the break in the line was, but took my best guess as a first place to dig and did find rodent damage but not necessarily completely open conductors, decided to keep digging until we stopped seeing rodent damage and most likely would find a open spot as well, probably uncovered 75 -100 feet of rodent damaged conductors and told the owner by the time we uncover all of the upcoming potential failures we may as well replace the entire line and he agreed. New line was sleeved in pipe.