i wouldn't need to trust google; there would always be a way to get my app to users who want it whether or not google wants it in their official play store. that is the huge difference between apple and google - google says "if we think your app is good quality we'll carry it in our store, otherwise find some other way to promote and sell it"; apple says "if we think your app is good quality we'll allow it on the iphone". with apple, there is no "otherwise".
bold prediction on my part: nexus phones and tablets soon will only be able to access the official play store. and launcher replacements will get kicked out.
