If you graduate nursing school, assuming you were living with your parents, and you had a lot of student loans and your parents said, "You graduated, now, get out" and you found a job as an RN in a field you wanted to get into or didn't, say you had no money and you had to live in a van for awhile, how would the facility feel about your lack of address? Say you had no friends you could reach out to to allow you to utilize their address for your mail. I know companies not related to medical field who have no problem with you living in a car or van or whatever that helps you save money on rent or mortgage so you can pay off student loan debt.
I'm not living with my parents, but I will be in this situation soon, so I'm hoping facilities would have no problem with it assuming you can prove you can maintain cleanliness.
I'll have enough money saved up by the time I graduate where I can afford a van, preferably white cargo van, where I can avoid the stress of paying rent/mortgage bills.