Dear Izzy, thank you so much for your reply!Using a shoe tree will help keep the shape of the boots so it is beneficial and you will be happy you did. I bought a beautiful pair of Burberry boots this past winter and didn't store them in a box plus I was a shoe tree short. Going through my closet the other day, I found the Burberry soft leather boots and they weren't in great shape considering they were last worn and cleaned in March. I did buy shoe trees for them and I hope it isn't too late. All my other boots had shoe trees and they were fine. Won't happen again.
I think I'm going to get a pair - I'm just afraid it will kinda make my shoes wider and they fit me like they were made for my feet

I hope your Burberry shoes will be in better shape, soon! Have you tried the trick with the spoon to give them their form back? I tried it and it kinda works - maybe that could help.