One of the biggest issues for me, with the safety razors, is just how easy it is to nick yourself. However, there are other parts of one's body, that are impossible to shave with a safety razor.
I'll try the hair conditioner as lather, but there is no way in hell I'm trying the safety razor on my junk (I'm a dude). I'll stick to the Dorco blades (Dollar Shave club) for that.
I suggest using hair conditioner as a lather to prevent nicks.