No problems, but part of varied dry food diet
My Birman tends to go off his food if it's the same thing every day (wouldn't you?), so we leave two or three bowls of different types of Royal Canin kibbles around the house so he doesn't get bored. I started feeding him this as well and although he likes it, it's never the first bowl that he empties. Some people have reported loose stools etc which may be due to the high protein content. I haven't seen any such problem since we got it a month ago. But this might be due to it being part of a varied diet.