A heads up, VS2015 now supports x64 Edit and Continue:
http://blogs.msdn.com/b/vcblog/ar...ntinue-in-visual-studio-2015.aspx
I had essentially not even bothered to try to use this feature for a number of years because it lacked x64 support. Even when I used it with win32, it was pretty slow and didn't work too well.
If anyone gives this a shot on their project, I'd be curious to hear how it goes. Maybe they've improved it and it's worth using now.