In this use case, the amsteel is being utilized as a lightweight temporary hookup for crossing over limbs. A couple of climbs with amsteel as a total linesman belt replacement will quickly send you back to solid core rope, as it isn’t really suited for abrasion resistance or tossing up a tree like a linesman belt needs to. It is, however, easy enough to hook it in while moving your rope linesman belt above an obstructions, then unhooking and stowing again.
................................................................................All climbing methods, platforms, saddle designs, and/or use of materials possibly mentioned in the post above are not peer reviewed for safety, and should only be used as an example of my own method. Do your own research and testing before becoming confident in any DIY solution to support your life.
-IkemanTx