You're not going to need to worry about the "weak" points with 1/8" amsteel blue. I use a locked brummel with 7/64" and I have never given it another thought.
Samson's stitching method will not prevent the proper constriction...http://www.samsonrope.com/site_files...h_Whipping.pdf.
I'm guessing that most of us are using the locked brummel.
Have fun with it and you'll be hanging in no time.