I have been using Amsteel for the last year in continuous loops (CL)on my WBBB with Dutch hooks (DH) on my whoopies (WS). The hook always hits the same point on the CL and was concerned that may be causing a weak spot. The DHs are on the adjustable part of the WS so when they are adjusted, they hitting a different point on the line. So, I have been, occasionally, adjusting the CLs some of the (DH) is not always hitting in the same spot. Depending on how much you use your hammock, I guess the wear on the lines would very, but for the use I get out of my hammock, I think I will be changing out all the lines annually. Amsteel doesn't cost that much and I enjoy splicing it.
Thanks for posting the article. Its always great to see some data on what we are doing. I don't ever remember wetting a knot, so I learned something there too.
I have use Marlin Spike Hitch in Amsteel and spent the night hanging from it without a problem, but I only weigh 170 pounds.