Yes sir it is. Was hesitant on trying it, but it's actually amazing. Been thinking about getting a stock pile of it now or starting it. I'd have to buy a freezer since I wouldn't put this stuff in the kitchen. Plus you're right on your "closest thing to a Marlboro light". My dad smokes them and Pall Mall blues and he came home yesterday and he tried unflavored. He actually really liked it.
That's great news about your Dad Danny. I started my mom and stepdad vaping on REOs and unflavored. Hell that's all they've been vaping for nearly a year. They both smoked longer than I been alive