I have 4 BOs in the city and yeah, I guess I'm sort of a slave, too. But in a good way...
That said, I haven't changed out their shavings since putting them in their 6x8 coop 2 months ago. I toss the shavings once a week to fluff it up, but it's not like I'd HAVE to do that. No smell, no moisture, but a lot of dust. Since it has been chilly at night (I'm in MN), I am giving them some cracked corn when I close up their house for the night and they scratch around looking for it, thereby turning their shavings mostly themselves. 
My run is covered, so it's pretty dry for the most part. I followed Buff's lead and put sand in the run (also 6x8) and I have raked it once, but that's only because I'm a bit OCD. And I like to see their goofy footprints in the sand. I don't know why that cracks me up so much...
Go for it - You'll be so glad you did.