I have both also. I also have both the Dexcom (and previously used the Guardian), and now have a DAD also. I also have no interest in arguing a point, I did not want a dog again in my life, I have had family dogs, 3 children who are grown and really didn't want another thing to take care of. But that is just not the way it has turned out for me. I am a Reactive hypoglycemic with hypoglycemic unawareness and the CGM often just doesn't catch my quick drops, or by the time the alarm happens, it is not accurate and there was a lag in numbers, so I am already low, or even in the floor, or low and ignore the alarm. After a trip to the Mayo Clinic and given no real hope of ever having a life that I do not have BG drops 1 to 10 daily, I started looking for anything to give me some freedom back. A DAD has been the answer for me. But it is a huge responsibility and in itself is life changing, both positive and what some would call negative. A trainer comes to us every month or we travel the 5 hours when I am well. He is almost 7 months old and because he has alerted this morning before I get low, I feel great and will be able to drive today!! yes he will be going with me. I do not mind answering questions on PM or email.