Wearing a Leash during Sex

So my SO and I have great, aggressive sex. Ass smacking, hair pulling, choking, the usual. Well he keeps talking about wanting to put a leash on me while he's hitting it from the back. He's been talking about it for a while so I was thinking about surprising him with one for Valentines Day, I'm kinda scared though. I'm afraid he'll be caught in the moment & pull too hard and choke me more than I'd like. Has anyone ever used one before? Did you like it? Was it safe? Did you get the shit choked out of you!? 😩