I have cut some of mine and it works, but others such as the heavy infantry with overlapping shields just can’t be cut which is why Scotty has likely gone for the double base width with them to give a phalanx look.
I am not fully settled on what I will do, but his work has opened my eyes to looking at all Epic projects from an alternative basing perspective. For example with my napoleonic cavalry, I have just moved over to single big basing 80mm x 60mm and I think I will do likewise for the Hannibal cavalry (and ECW!).