Has lower area than my slap stick solve, which was always just barely not good enough, either in periodicity or geometry.  Had to re-convince myself that 1/3 T solutions do NOT pair nicely with berlo.  Also spent an embarassing amount of time messing with berlo before I actually tried to reason out my issue and realized I needed the mirror tool.

I feel like there's probably a better duplication and stickification solution, but I tried a bunch and they were all too lame for this solve.  My favorite part of this is the arm that grabs the half shells, which I discovered by mistake when I put the arm in the wrong spot.