Yes... but I strongly recommend giving the seamed pattern a try! Seams are vital to knitted garments' structure and integrity. Read more about why Amy prefers to design seamed patterns here.
If you're not convinced seams are for you, that's okay! Every pattern does include some basic guidance on how to work the body of a sweater in one piece to the armholes, and the sleeves top-down using short rows. That's a great option for someone who won't make the sweater if it's done entirely in pieces.