There is an approved Chrome extension that allows you to export the workout files for all the SYSTM workouts as FIT workout files.
You can export those and convert them to zwo files and then use those in TP the way you’ve used your current placeholder files. That would give you a better idea of how they will affect your fitness.
And you can also use them as custom workouts in Zwift or TP-V, etc.
I’ve exported some of the no-vids and use them as workouts in TP-Virtual.
Edit: to add link to FIT exporter thread