PS: if anyone has ideas for fixing the Skylines so that they can be removed without making a complete mess of the wall I'm interested.
Depends on what your definition of a complete mess is
I am using heavy duty Velcro from Home Depot. BUT, do not put the sticky side on the wall or, by any definition, you will have a mess (I know ... I've done that many times and that is how I am currently mounting them).
Leave the protective covering on the side that goes on the wall and use a heavy duty staple gun to hold the Velcro to the wall. But do use the adhesive side on the Skylines. You will still need to touch up the wall when they are removed but nowhere near the extent if you apply the sticky side.
I have not tried this but someone makes wall hangers that can be used on walls and will not remove paint. I would go to Loews and see what they might have that uses a similar approach.
Let me know what you find out as I will be moving into a new house/new room in 5 or 6 months and will need to apply these yet again.