My centerpull QR modifcation These should have been made this way from day one. As long as your pads aren't super close to the rim, you don't need a separate QR for the brake.
Oddly, the front 'fang' of what remains of the eyelet was left on merely for aesthetics. When I first attempted this modification I cut the front 'fang' to line up with rear one and they worked just as well, it just looks sketchy. 1 year of regular use, no issues. Full tutorial on my blog.