Is there a way to incorporate a workout like Petit into zwift and still log the workout?

[holybinch]

yep, doable:

Running TR & Zwift in tandem

Most of this has been covered, but here is the best combined reference on mixing TR and Z. I use the Method #2 (double ANT+ dongle on PC) and it has worked flawlessly for 3 years. I have also done Method #1 with great success.

should get you sorted