I mean - you need money, food and other stuff anyway to live so what's the point of this method? It's very help you if you couldn't use the Nympho ability for example.
Aaaaand... hmm... i don't know. What else?
I guess so, yeah, I guess so, hmm... but i think run all the way from the arena to Elise house again and again uncomfortably when you can just save in front of Elise bed after night basement investigations and - Sleep -> Load game -> Sleep -> Load game strat - until you find what you need to the next day.