Mmm, no I don't carry it around with me all the time.
If I'm rigging down a large dismantle, then yes, I take it up (my big BMS rack) and use it to lower everything.
Typically my groundies are not rope savvy and the descent is controlled from where I am at.
I know that sounds pretty crazy to some of you, but you work with what you've got, lol.
Especially when dismantling big dead pines, or worse, live ones(heavy!), hanging over houses... I trust myself most. Granted, it takes time, but at the end of the day, I'm held responsible, not my groundies.
Whats this about feeding a rope through it???? you take a bight of rope, pass it up through the big hole in the figure-of-8 descender, and loop it around the bottom.... walla! done!
did you mean actually feeding it through by hand??
That'd take forever!! The rack is the same way, every other inner bar unclips on just one side and swings free to allow a bight of rope to be passed up and over the bar, then it is clipped back in.
No threading whatsoever.
Quick, efficient, easy, simple... Not time consuming.