Do you have a reputable source for this? Almonds contain carbohydrate, so surely they have some effect of blood glucose?
Because glucose is a sugar, you seem to be confusing it with fructose (another sugar, 5-carbon vs 6-carbon). The glycaemic index specifically looks at one specific sugar -> glucose. Sugars aren't intrinsically bad, but often times they are removed from their origins which contain other constituents that help our bodies digest them (all sugar, no pulp).
http://www.vitalhealthzone.com/nutrition/nutrition-questions...
I make my smoothies in a Vitamix. It has no trouble with the raw almonds or anything else I put in it. Aside: for a long time I didn't want to buy a Vitamix because of its cost and size. We started with a Magic Bullet which I found nothing but frustrating. It was constantly leaking. Eventually I gave it away and bought the Vitamix S30. It is a superior product, and it's a joy to use something which is both well designed and well built.
As a mid-20s western guy I hate the flavour, and it's not something I've ever seen young people eat. But older folks seem to love them. Maybe it's a rite of passage when growing up that eventually you come to like olives :)
You probably already know this, but others reading may not:
Almonds have a glycemic index of zero.
They are a great addition to a fruit smoothie since, in addition to the fiber of the whole fruit, you knock down the (already low) glycemic index of the entire (liquid) meal.
I wonder if you've considered almond butter ? Most almond butters on store shelves contain sugar, which would disqualify them, but many grocery stores (including whole foods) allow you to grind your own in-store ... I find it much more convenient to add almond butter to smoothies rather than almonds themselves ...