I do agree that you can be shit out of luck if the enemies aggro and don't give you a chance to juice. That said, there are tricks to time your juice so that the enemy walks into it before they can interrupt you with an attack. It's not a sure fire strategy but works in a pinch.For combat, dirty rags outfit is much better for juiceable enemies. They literally start jerking of in front of you or try to slowly grab you. With whore outfit, if you are found out, its very hard to land the juice ability because you have low weakness enemies go full on, and with whore outfit you have a pathetic 3 defence, and with dirty rags you have 12. The speed is not enough to make up for all this.
Thats what saddens me, I love those outfits, but you always have to take them out when actually playing the game, so I find myself barely using them at all.
Piercing are good because you can hit weakness level with weapons equiped, very important because the second an enemy sees you juice somebody to death, they will stop horny mode and hit heavy, and not having shield and a weapon when you cant afford to run around and aggro other enemies is hard.
You are right about the money from prostitution being good, but since I found out it loosenes wholes and loosened wholes lower heavily sex damage, I just didnt enjoy doing it. It seems like something you do in the endgame after finishing missions and just needing to get enough gold coins.
As for loose holes, you can always ask Elise to tighten them again and doing the QTE during prostitution considerably reduces the damage it deals to Lona's body.