I have to break in here, since I have raised two pups together twice, and there's a lot of "nonsense" being told about doing this. My cousin read all the negative stuff, but he finally listened to me, and cracked and tried it, and admitted it was the easiest puppy raising he had ever done, by a mile.
The only real negative is expense.
It's MUCH easier than one pup alone! They will keep each other busy, tire each other out, and generally sleep better than a single pup. Molly doesn't sleep much though, but King makes up for it.
The "bonding to each other, and not to you" is also nonsense. The two dogs that were insanely in love with me were both from these pairs of pups. The one I have now, King is asleep at my feet right now, Molly's on the bed in the next room, she's not nearly as close to me as King is. They are close in an odd way, if one shows signs of illness, like throwing up, the other one gets very upset, and worried, but other than that, they are like any two dogs with different personalities, etc.
I have to admit, I disagree with much of what many dog experts say is "fact". I think most of the "crate training" stuff is total BS, a way to keep from having to pay attention to the dog.
I say, GO FOR IT!!