i think this is all in the name of getting a shave where you cant even feel the blade on your skin... which would probably be nice zero irritation or razor burn... but, it could be a bit much.... unless it was a seriously significant difference... and i know im not ready to potentially ruin my $110 rooney brush... lol not sure what it would do to the brush... probably nothing... but i know the brush works with lather, and lather works well enough for me... im not going to be trying this method out any time soon... but, if it works... go for it