I have finally hit my pre-Sifter salary. We could have technically afforded it a while ago, but we only recently decided to make the adjustment. Of course, that was my salary 5 years ago, and from what I've gathered, I'm still way under what I could be making elsewhere--especially if you factor in benefits.
Keith, my partner, has never been full-time. He's always been involved at about 5-10 hours per month, and that's still the case these days as well.
I have a blog post that talks about the pay cut side of things a bit on my blog. http://garrettdimon.com/post/34571624540/can-you-afford-a-pa...