Yeah dyneema/amsteel is great stuff, so easy to splice! And much cheaper to makes shackles out of. Here's my favorite soft shackle tying method.
Better Soft Shackle
I use them now for nearly everything. Makes sense too. 1/4" amsteel has a breaking strength of 8400#, costs $1.40/ft and requires about 3 feet of material to make a shackle. Hard to beat that economy.