JW can be pretty hardcore, even moreso than Christians.
One time this JW chick I went to school with was in an advanced english class I did in college. She always kind of seemed to like me or something (she was white). Well we had to do an ethnographic study on a particular group we didn't know much about, and she wanted me to do it on JW; she said she'd take me to their service, but I didn't go; I remembered the look her brother gave me when he saw me hanging with his sister and didn't want to see an entire church full of that lol.
So instead I went downtown and by the luck of God got into a NBPP meeting, and got a gun waved in my face. I got an A on the paper for that