Swaping the Wagtail Rubber

I just watched the video about the rubber used in the wagtail tool. It is a hard rubber and not very useful in cold weather. Can the rubber be switched or replaced with say the ettore rubber which is a softer rubber for the cold months here in the Northeast? And is it hard to make the swap into the channel?

I almost always use Ettore rubber in my steccone channels. I used a sample Wagtail rubber once and it seemed to be the same size. I prefer a softer rubber than wagtail.

Wagtail Squeegees will take all standard rubbers and if you want to see these tools in action go to You Tube and watch the World Window Cleaning challenge