Will TriAxial surround speakers work well in a Atmos setup?

Yes! 

Our design is sort of a mix of a monopole and a dipole design, we call them TriAxial. 

You do get most of the sound from the front-facing tweeter and woofer, where the dipole side drivers create a better coupling to the room and give a feeling of even larger space around you - it works great for Atmos! 

You are also able to disconnect the side drivers on the 1723 Surround and 1723 Surround S, so you can test both options in your room and decide which you prefer.

In our opinion, it works best in TriAxial mode.