VRCFaceTracking Blendshapes question

So I'm still learning to make vrc avis and I had a question about blendshapes:

Would there be no issue if I add blendshapes to my avi for both VRCFaceTracking (Unified Expression) and the Oculus Viseme References (which is the one usually used for vrc avis mouth movement when you don't have Face Tracking)

If I said something that is not correct you're most welcome to correct me.