I think that part of the reason why many areas do not give blood glucose monitoring to their basic providers is that it's not going to change the course of your treatment at all really. If someone's concious and altered, you can try to give oral glucose and see if the condition resolves.... If a basic wants to check a blood glucose level, go ahead. It doesn't effect treatment though within the BLS scope for the areas I work.
Shane
NREMT-P