Dallin had a great game against the Dolphins, but I don't want to see us chop and change for no real reason. I remember Berry on the wing once, Maika Sivo says hello lol.
You mention Dallin would gain valuable meters post contact, Charnz is 7th overall in the comp for that stat so he's doing phenomenally well, and very unlikely Dallin tops him.
For me, CNK at the back AND Dallin on the wing means we have a top 6 fullback and one of the best wingers in the comp in those 2 positions, if you swapped Dallin there and CNK to centre neither would be in the top 20 for that position imo