The mechaber says in O.C. 4:10 that by Netilas Yadayim in the morning one should pick up the cup in his right hand and then give it over to his left hand to pour on his right hand.
I know that the Magen Avraham in the beginning of Siman 158 by Netilas Yadayim for Seudah says that one should pour on his right hand before pouring on his left hand, but does the same apply by Netilas Yadayim for Seudah that one should take the cup with his right hand and give it over to his left hand to pour on his right hand?
Yes, the same applies to washing for a meal. The preferred way is to pick up the cup with your right hand, give it to the left hand and pour with the left hand on the right hand first, similar to washing hands in the morning.
Aruch Hashulchan 158-16, Kaf hachayim 158-3, Sharei Habracha 1-39.