Sadly I don't find TeslaWaze make enough difference, for me, so I have Tesla Nav on screen, with sound turned off, and Waze on my phone, with sound turned up. Waze routing is, over here at least, far far superior to any other Nav that I have used (no experience of using Google Maps for NAV) with traffic rerouting, audible alerts for hazards / police on route and so on. The maps on my phone are too small to be good enough, so I use Tesla Nav for that - particularly when I have a complicated, unfamiliar, junction manoeuvre to make - I zoom-in on the Tesla map to more clearly see what I am supposed to be doing. There is a fair chance that Tesla and Waze agree on the odd occasions when the decision is complicated enough for me to need the Big Screen, particularly if I am close to my destination. Tesla Nav also gives me the associated energy graph etc. (subject to change if Waze decides to take me a longer route of course, but I can factor that in easily enough if there is a significant difference), which I need in additional to Waze on my phone.
Replacing Tesla's Nav with Waze would be perfect from my perspective.