I've cleaned my E-M5's sensor at least four times with anti-static brushes followed by swabs & Eclipse fluid. This was all in the first few months of owning the camera, after loaning it to friends & acquaintances who saw nothing wrong with letting it sit around lens-less with the sensor exposed.
Needless to say their user privileges were revoked. Anyway, no harm done to the sensor or the stabilization system. I was gentle & careful with the cleaning.
(A few weeks ago, in the midst of fighting off a cold, I somehow managed to spray part of my Sony A7r's sensor with nasal drippage or saliva while changing lenses. Making matters even worse, I initially didn't realize what I'd done…I thought the blobs in my photos were due to dust, so I gave the sensor a brushing off. Which only smeared the goop all over the lower left quarter of the thing. I finally got the sensor clean by using a couple swabs, then some forceful scrubbing with a Q-tip, followed by more swabs. The sensor looks pristine now, and there are no hints of anything amiss in the photos I've since taken. I now keep white dust masks in my A7r & E-M1 bags, and next time I get the sniffles I intend to wear 'em while lens swapping. A cautionary tale.)
-Dave-