How much dust do you get! Fricken loads of it!
I have a half face mask that's comfortable to wear for long periods and for me it was a must. The dust that settles on things is quite dry and doesn't really stick. I used a damp pan scrub(the foam-and-white kind that are safe for nonstick pans, not the abrasive green ones) and it more or less wiped off. Even the odd bit of overspray on the skylight frames(aluminium) cleaned off easily. Wood would be a bit harder to clean up but if varnished should be a wipe clean too.
If you can't be bothered making a spray shield, have a look at these:
http://www.decoratingdirect.co.uk/viewprod/d/DO-ALL_TRIM_EDGE_SCRAPER_SPRAY_SHIELD/
I mist coated, but be wary of making the paint too thin. I thinned mine down too much to start and it's like spraying water.. unless you move the gun really quickly you'll get a run.. it's thin so it doesn't cause much buildup but it's visible through subsequent coats. I also found it handy to have a roller loaded with the paint I was spraying and anywhere it ran or I over applied I gave it a quick tickle with the roller before it dried. The other thing you'll find the first couple of coats dry really quickly, couple of minutes or less as the moisture is pulled into the plaster
The machine comes with a comprehensive instruction book including the half hour wash down procedure.. leave yourself plenty of time to finish up and clean up
One minor downside with the machine is the hose locks tight at both ends and doesn't twist because it's rigid pressure hose so it's not easy to rotate /change the gun angle. I found this improved if I left a curl or two in the hose so they would tighten or loosen as I wagged the gun around. Definitely remember to trigger off before you reach the end of the stroke and change direction, overlap your sprays 50/50 and avoid walking round with the gun running. To start I walked the entire length of the wall but found it hard to get an even spray as even the slightest snag o the hose causes it to pause or jump and not deposit evently. Stand still and spray in approx 1.5m widths then reposition. I'm sure if you have a clean unobstructed floor this will be less of an issue. I also put the machine in another room and wore earplugs because it's noisy and tiresome to listen to
Think of it like jetwashing, with paint coming out(bit more of a precise pattern but other han that, more or less the same) - they're practically the same machine