I don't really press the brush into my face. Also, how do you whip up a lather using painting motions? whether bowl or face lathering, I don't think I've ever seen it.
Rapid back and forth painting motions will whip up a lather on the face. It's not hard at all, but I much prefer circular motions then using paintbrush strokes to even things out.
Anyway, I think you are way overthinking this...just use the brush for a bit instead of being worried about the bloom. Again, if bloom is really a problem for you, 2-band Super/2-band Silvertip is your friend.