Are we now a flipline thread???
If you're bringing the wire core to get protection then you might consider your saw handling techniques. Not that it isn't a good idea to have protection but it seems to me that the amount of protection is small compared to the weight.
The acid test to the saw technique thing would be 'How long until you nick your flipline?' Because to be quite honest if you just lightly nick it, you're gonna be thinking about buying a new one. Once the rope winding dissociates from the inner steel cable, the rope will slide up the cable, bunching up, and making use of the microcender impossible.
My current wirecore I bought at last years TCI, making it about a year old to the day, and not a nick. Of the two previous wirecores, I dinged them both going up on pine takedowns, limbing as I'm climbing. My saw handling technique improved after that. Wirecores can run up to $75
Let's lay an 8 foot wirecore, minus the snaps, next to a buckstrap or lanyard, minus the snaps and compare their respective weights, I think you'll see that the difference is mere ounces.
The weight can be used to advantage. As MikeCross23 puts it
I just like the way it flips up or down a spar.
I like the way it flips around anything. I like the way you can have it wrapped twice around you, grab hold of a snap, do two lasso turns above your head and you're ready to flip. I love how the microcender can be pushed to the far snap end so you can flip around a fat trunk section. I have never even
thought about the weight of the rig until writing about it here.
I like the instant, two-fingered (make that a finger and a thumb) adjustment of the (oh so heavy) microcender. And I'll be quite honest, mentally, I feel more secure on a wirecore than from a buckstrap, or a Grillion, or rope lanyard. But that's just me. -TM-