Yes, if you have at least one airplay2-compatible Sonos device (a Sonos One, the second generation Play:5, the second generation Playbase or a Beam).
Just add the Airplay2-compatible Sonos to Apple Homekit. In the Sonos app, check Group Non-Airplay compatible speakers. This allows non-airplay2 Sonos speakers to play if they are in the same Sonos group as an airplay2-compatible Sonos speaker.
I use the Siri via Apple Music to play music on the Homepod and Sonos. I have also airplayed to HomePod and Sonos at the same time using iTunes from my Mac and podcasts from Overcast from my iPad.
I have noticed that there can be intermittent problems when I’m using both: speakers out-of-synch; pauses; stoppages; etc. The problems are mostly short-term and I cannot reproduce. In general, they are minor annoyances but it makes the use of both not family-ready (at least for my family). My advice would be to purchase a HomePod, test it, and return if it doesn’t work well for you. Let me know if you have specific questions.
Also, I am wondering if my experience is the norm. Can anyone else relate their experience?