Re:
As this thread has resurfaced, I'll update.
My project bike is a 90's alloy cross bike. So it has beefy forks and with a slack head angle makes the front wheel way out in front and gives heavy unresponsive steering. Anyway, I put my mate's forks on and looking at it side on, the Forks look ever so slightly bent back as though they've had a 'head on. And a fair bit of toe overlap too. Thing is they have transformed the handling of the bike, which now feels great. And the bend-back must have been even to both blades, as it tracks well no-hands. There is no visible creasing, so I can't see any accidental evidence and my workmate has since retired, so I can't ask him what the story might be.
I've taken the view that steel is durable and this little more than accidental cold-setting, so have every intention of continuing to use them as is.