I use Nutriment for Blue too. Before I decided to go raw, I bought a bag of Orijen kibble, but in the end I didn't start him on it. Recently, when he went off his food due to the heat, I opened the Orijen and gave him some, and he seemed to like it. I also took some when we went out for the day, and gave it to him at lunchtime - so much easier than transporting raw food.
When he has had the Orijen, his poo is still firm, but there is slightly more bulk to it, which I suppose is not surprising.