I wear a warning bracelet, although I don't suffer from hypos. I use only diet and exercise and 2 x 500mg Metformin.
However, If I were to be involvd in any kind of serious accident, I don't want anyone putting me on to a glucose drip. it also has my husband's mobile number.
it's a stainless steel ID type bracelet. It doesn't interfere with anything i do and I NEVER remove it. I swim often.
Even if it's not necessary, i feel more secure with it on.
Hana