I have had the Arq for one month and the experience with Google assistant is really poor.
My first comment is it only seems to work when I shout or get really close to the microphone. What i’d consider a ‘normal’ user experience (reasonably loud) command often doesn’t get results.
My second comment is that there is a vast difference between the accuracy of Sonos Arc vs iPhone Google Assistant. I use Arq with commands and i get ‘sorry, something went wrong’, or some garbage response, or just flashing LEDS and back to music. I say the same thing on my iphone/Google Home and it’s works perfectly.