Thanks for the great advice, everyone. Much appreciated. 1/2" steel core flipline in 15' length (less adjuster) is on its way. I'll put my new Micrograb (lock nut included) on it when it gets here.
Joel
Have fun with new lanyard, but I would seriously reconsider using it as a second climbing line, steel core reacts differently with the micro/macrograbs than regular rope.
Regular rope will grab 100% every time, but the steel core seems to have enough stiffness to it that they can open the gate on the grabs, even just unweighting for a second can allow the SC to sort of open the grab and allow the core to slip thru. Its very disconcerting when your up 50 ft and this happens. Not a fun feeling, at all.
Long story short, you really dont want to use steel core for climbing line, its just felt unsafe, anytime I have been 'forced' to try to use it this way.
I have a 15ft yale on micro, and Ive tried to use it single line style but it is just not suited to the task, a regular rope, will work 100% better. The way the micro/macro(or pretty much any 'ropegrab') works in combination with the steel cores(both 1/2" and 5/8") is just not right, works perfect in the lanyard adjuster position, I have three of them, and I trust them implicitly when they are used as meant to be used.
Steel cores were never meant to be used as a second short climbing line, take it from someone who has already tried it.