Yeah i just dont think it's as big an issue as so many on here see it as.Nunes, Lewis, Stones, Akanji, Khusanov these are our RBs
Nunes is the starter, then if he needs rest, we have plenty of good fill options.
No, they can't play it the same as Nunes, but they all offer their own advantages and disadvantages in their own way.
Im particularly fond of Khus or Stones as the backup, and Lewis against inferior opposition where his defending isn't as required.