I like my bipoles quite a bit as well, and haven’t noticed any issue since converting to a 5.1.4 Atmos system. I used this article as my reference on Atmos.
https://www.audioholics.com/loudspeaker-design/surround-speaker-dipole-vs-bipole
That article seems to be ok with bipoles. I think that means it is ok to use them but monopoles probably are going to be better. In my case I’m going to use them at least in the short term.
