Here it is working in my studio.
Only problem - it sucks up loose thread. Well you say, isn't that the point of a vacuum cleaner? To pick up stuff on the floor - even thread? But think of that thread which happens to be attached to a heddle ... here comes the Roomba...slurp...slurp...slurp... sucking it up...unwinding the thread effortlessly from the heddle... and so quietly until you grab it...or its all gone. Then it moves on....relentlessly.
The Roomba next found a spool somewhere on the floor, a spool obviously out of my sight I noticed later that the Roomba's wheels had turned from black to turquoise. When I turned it over I saw a lot of turquoise thread wounded tightly around each wheel as well as all over the bristles. Clearly, not thread I would be weaving with at any time in the future.
I have one re-cycling/re-purposing habit...I keep, collect and re-use my leftover Sulky thread... well at least those in colors I like. I like blue. So I cut off the turquoise thread from my Roomba, packed it away like my other unusable threads...in Christmas balls. The cleaning today yield two turquoise Christmas balls for next year's tree. I usually don't fill more that one ball every couple months or so. Quite a productive day.
As for the chihuahuas, they don't find the Roomba enticing...but the Black & Decker Dustbuster continues to be their arch enemy.