I as a breeder never sell sibling pups together... It is twice the amount of work and twice the amount of trouble.. Not saying to cant be done..but I would definately separate them in your house.. Simply because from experience they form a bond with themselves and not with you.. If you and your hubby are willing to train separately as well as together..one take one and you take the other..switch and then together you will have a better chance to succeed... But outside their crates and such they should be able to snuggle up to each other for comfort.. It is hard to disipline a pair of dogs especially when you dont know who did it..
Good luck..
Dawn and the gang