Bought two of these 1 litre bottles (BOGOF). One proved to have a faulty neck so the stopper screwed in slightly tilted and thus leaked. Exchanged at shop no hassle, although I wasn't convinced they weren't just going to put the faulty one back on the shelf.
The karibiner supplied is pretty flimsy and I wouldn't trust it personally. Suggest either supply a sturdier one or don't bother at all.
Having said all that, I had searched quite diligently and couldn't find anything else similar anywhere near this price, so I'm very pleased with the purchase. It seems that prices of these bottles vary depending on which brand name is printed on the outside; the basic bottles all seem the same to me.