This may sound odd, but can I ask why you want to drink it?
It only provides 1/4 c. of vegetables and 1/4 c. of fruit. SB doesn't recommend drinking fruit juice in any phase, and my understanding of their take on regular V8 as part of the diet is a way to get that 1/2 c. of vegetables in for breakfast for those who really can't stomach veggies at breakfast. (I am one of those people, and get my morning veggies in with a small glass of regular V8.) Also, you should only be having that 6-8 oz. serving of V8 once a day.
In the plan of SB, you need to eat a minimum of 4 1/2 c. of veggies per day, so a glass of the fusion isn't going to help you much overall. Honestly, I don't think a glass of it will hurt you much either, but if you're looking for a good way to get veggies in, this isn't really it.
Also, I wouldn't drink anything with fruit juice in it until you are fully established in P2 and your body will be able to acclimate to the instant kick of natural sugars you are going to get from it. Are you up to at least 2-3 starches and 2-3 fruits per day?
FYI - I did a google search on the ingredients in their Light Pomegranate Blueberry and this is what was listed:
Water, Reconstituted Vegetable Juice (Water and Concentrated Juices of Sweet Potatoes, Purple Carrots, Carrots), Reconstituted Fruit Juice (Water and Concentrated Juices of Apples, Pomegranates, Blueberries), Natural Flavoring, Vitamin C (Ascorbic Acid), Malic Acid, Citric Acid, Lemon Juice Solids, Vitamin E (Alpha Tocopheryl Acetate), Sucralose.
Sweet potatoes are considered a starch on the beach, and carrots are limited as well. I wouldn't really call it SB-friendly.