About a week ago, through my own stupidity, I broke my brand-new BelCanto G string

when I way-overtightened it using one of those cordless drill string winders that Bob G. sells (a great device, don't get me wrong).
Since I had a couple of weeks between gigs, I figured, what the heck, the break is above the nut so I'll just tie it back together (using a "square" knot) and see what happens...
Well, surprise, surprise, it's been working fine; it's holding its pitch and sounds great.
I've got a replacement on the way, but I'm curious if anybody else has had to resort to this before and how long the string lasted tied-together.
- Martin