Armwarmer or a hat

Alright, I finished one of the armwarmers and am on row eight of the second one when during the last knit meeting, Extragalactika told me about a hat pattern also based on Pomatomas. I really like the hat but I already knitted so long on the armwarmers. Aack! What to do now? Do I keep going and finish the armwarmers or do I frog it and make a hat?