Denise, I assume that your mean around the outside of the windows
, inside the trailer. Wood on the outside of the trailer would be high maintenance.
Yes, this has been done. I'm not familiar with Scamps, but if they are like Trilliums, there is a wood frame under the Ensolite, (Elephant hide). These frames are prone to rot and needing replacement. I have done this, but I ripped the Ensolite in the process. Fortunately for me, the upper shelves covered that rip. However, others have put a frame around the windows to cover their rips.