Whatever method you use to remove the hair, if it involves pulling it out by the roots (plucking, waxing or threading, as you guys describe it) it will take the same time to grow back. The only difference is if you're using one of those methods and the hair breaks off instead of puling out the root. Then it grows back as fast as shaving.
This sounds like it would feel a bit like those depilatory coil things which were all the rage about 20 years ago. Maybe a bit gentler - those things were vicious!
These days I use cold 'wax' (NADS) on my brows and an electric epilator everywhere else. And I do mean everywhere. No razor any more, not for years, because of infections. With time the epilator doesn't hurt nearly as much and really deep roots no longer draw blood. The way I used to be - I'd have needed a blood transfusion after a Brazilian. Now I can barely feel it and I can whisk away hair for six weeks, in only a few minutes. Mind you, the bathroom floor looks like it's moulting... and don't let those tiny blades grab your skin, THAT hurts, even if it doesn't cut. So dry skin pulled taut, please. But great for those facial hairs we try to pretend we don't have. I can't see them, but I can feel them and the epilator can find them - I can feel it enough to know when I've got them out. In the time it would take me to find one hair with the tweezers, this gadget has done the whole under jaw area.
NADS - an Aussie invention, it works like wax only it is room temperature. Not hot. Any residue washes off in cold water. The eyebrow treatment comes in a cute little pencil applicator which you click up to squeeze out a little more gel. It feels like thick honey. All natural. No wax. The woman who first made it for her very hairy daughters (the name is an acronym of their initials) has become a millionaire. her name is Sue Ismael.
Marg