Before watching the instructors video on the exercise, I was not aware of the option of unwrapping only specific faces (i.e. those in the current selection). I used only seams to support the unwrap operation and get a “good” result.
It strikes me that seam marking and unwrapping by specific face selection are somewhat interchangeable (at least for texturing). Is there any specific advantage or disadvantage to using one over the other (other than “working speed”: I unwrapped the handle of the axe using the specific face selection to get the same result as seam marking in this video, and it just took way longer) ?