If someone's life depended on me threading 'em up, they're past tense. I can't even sew a button worth a darn.
But back to a tourniquet ... a tourniquet applied long enough to pack and bandage the wound is not a good idea?
And, to open another can o' worms ... anyone here of the Crazy Glue school?
I generally carry both a tube of Crazy Glue and a tube of EMT Gel (for the dogs) in the FAK i carry pheasant hunting.
And there's always wound strips and duct tape.