I was only micky taking with the 'only', Snoops and i have discussed before.
Never remember which is which Snoops, is hypo the low, in my experience there is usually warning signs and the coma takes a while. If it's the high then you'd have to be not looking after yourself properly.
I hear newspaper reports quite often of diabetics near death experience. One lady attempted to sue a train company because the train was stuck between signals for an hour and she 'could have died'. She could if she'd given me her story...