He looks like Vegas, my lab/english pointer mix. I have some pics on him under my dogs if you want to take a look.
How big is he? Any other pictures?
Also, for comparison for you. Vegas held about 55lbs for most of his life, but he was very fit. Not an ounce of fat on him. As he got older he got a little chunky and at his highest hit about 70lbs. Now at 12 I've gotten him back down to 64lbs. He's a good weight now and looks healthy. Just not as fit as he was.
Because of the lab Vegas does shed a good bit. But I've never heard of EP being worse for allergies. Though it's not something I really look into because I don't have any. You could always spend some time around an EP or mix and see if it affects you. Vegas is a wonderful dog, I love him so much. But he is... Odd. Doesn't swim, retrieve, play with toys, is afraid of most animals, big or small despite being around all different types of animals. Super picky about food.