I've also just received delivery of a Rabbit Air A2. I used it one cold evening when I couldn't finish a full bowl outside.
It limited but didn't erase the smell as I was smoking the pipe. The next day there was still a smell lingering in the room (you notice it when you leave and return, not so much when you've been living in it). Over the course of 1½ days, the odor fully cleared.
I'm treating the air filter as an emergency alternative at this point, for an occasional pipefull when it's nigh impossible to smoke outdoors. I'm not sure yet whether smoke odor will build up in furniture over time, or whether more regular smokes will be possible while still being able to eventually restore fresh air in my living space.
I don't doubt that this is the best air purifier of its class. Just not yet sure if it can prevent frequent smoking from seeping into my home.