I don't usually write-up BD product specific tests and results, but I've just been getting so many of a similar type question on the Spinner Leash lately, that I felt I needed to. And to be honest, these questions are kinda freaking me out.

"I just bought the Spinner Leash, How strong is it?"
"Is the Spinner Leash strong enough for it to hold me if I get too
pumped?"
"Will the Spinner Leash hold a fall if I whip onto it?"
"I want to make my own ice climbing tether system, how strong do I need to
make it?"
"Is the BD Spinner Leash stronger than the Grivel Double Spring Leash?"

Why do these sort of questions freak me out?  Because it shouldn't matter how strong these things are.  Sure they're rated to 2kN—like most tethers—and you can hang on them if you wanted or needed to, but you must remember that the leash is only as good as the
placement of the ice tool it's attached to. Think of bounce testing a Pecker with a daisy chain. If the Pecker blows, you have it zinging towards you—same as if you decide to weight your tools via your Spinner Leash, except the tool is further out of your reach and has way more mass, and now it has the potential to slingshot towards your head. Ouch.