Strengths: Easy to carry if travelling or racing, just mix with water, tastes good if mixed well.
Weaknesses: You need quite a big bottle do shake it properly.
Overall: The first time I used it, I used too small a bottle to mix and ended up having to sieve in through my teeth, yuk! Once I'd got over that initial powdery experience, I followed the instructions properly and have found it to be my post-long-run fuel of choice. I was delighted to find one free with my mag last week, as I had run out :)