I've never owned one but tried one on so I don't know if this helps at all!
They seem to come in two different widths (for the bangle part). The thinner one is roughly the same width as the Dinh Van Serrure we both have. Approx 1.5mm. I haven't tried the thicker one however. As it closes I would imagine it's similar to the Dinh Van with regards fragility (which I haven't found fragile personally as it closes securely). I don't know if the tiny latch would wear eventually though if taking it on and off constantly.