Well this just sent me down a rabbit hole of like 6 pages of this guys history. My sense is that he's probably legit. Seems like he bounces around between a car, maybe a cheap hotel, other unknown. Occasionally does ask for help like a meal but doesn't look like anything outlandish. And also appears to spend free time watching sports and surfing Reddit so must have access to a TV and computer - probably public. Occasionally seems to fall for money scams. I honestly don't think this dude is a grifter but I still wouldn't trust someone I hadn't met with space in my home.