I just completed the Bronson Spot lesson in Season 5, Laces and loved it. So much so that I am warping up the Abalone & Ebony towel and scarf project. The draft for this includes floating selvedges. Is that a designer's choice for neater selvedges? The Bronson Spot lesson doesn't include floating selvedges, and looking through the Abalone and Ebony pattern, they don't seem necessary.
They aren’t necessary but it is your choice. Some weavers like them. Barbara Mitchell designed Abalone & Ebony and she likes them :)
Totally up to you .
Hope this helps.