Suck is the perfect diabetic adjective. (but I digress, you already knew that.)
Are you a finger sucker? Or do you always use a tissue?
(Depends on the environment (with me) at home/work, I'll suck it, if in a restaurunt/restroom/public place I won't) I think it would be very
difficult(ie, almost impossible) to get a finger infection from such a practice.
(I'd be more worried about blood borne diseases)
Interestingly, blood tastes the same, with high-normal-or low bgs. You mainly
just taste the salt.