Yep, I'm constantly switching my dogs' kibble. Basically every time I have to get a new bag. There are a few brands that I tend to rotate through, occasionally we'll get something completely different. My dogs have never had a problem with it. I think the digestive problems occur when people feed the same kibble for a long time, and then try something different.
Ryker: (USDAA) SR (DOCNA) C-BTA C-ISLA
Chandra: puppy in training!
Living forever in my heart, Solstice: (AKC) MX MXJ MJB (USDAA) PDCH (DOCNA) MEX-Bronze