True, but if it's a ugly woman it goes to comedy situation (and that case blindness is actually blessing as he can't see the act at all). But considering his escape chances grow higher if he is able to see he would gladly tell removing and placing his eyes on someone does not give them red eyes at all as eye glowing is just sign of the manifestation when powers turn active (than be the source).<br/><br/>As actual source of red eyes is in genetics and for fact that red eye possesor lacks the tenketsu points (http://naruto.wikia.com/wiki/Tenketsu) in their body. It's not that they are incapable release chakra but rather their whole body releases chakra from pathways to the muscle and to blood vessels. So it's not released from specific points but rather from whole body. So in a way gentle fist user cannot block their chakra flow completely but make the flow more difficult and cause serious harm to internal organs still.