And I volunteered.
I love the 60 macro, I'd love to take it with me to the 5D, and so on. Sadly, this is not to be, because of the EF-S mount.
So in a nutshell, I hacked the EF-S 60 macro to remove the baffle. It was nerve wracking. I think I need a drink. I think they even epoxied the baffle down on this one, I can see traces of that stuff. NASTY!!!
Long and short of it, the baffle goes, same way as the 17-85 IS USM done by Lightrules (thanks dude, your work was key in making this happen).
I even put a 5D on the line, thinking heck, in for a dime, in for a dollar. Actually a lot of dollars. No, the 5D mirror did not suffer lasting damage (I THINK). YES, it DID slam into the back of the lens 
YES, it was $#@(ing scary.
On the other hand, the 1D loves its new workmate.
Reports for 1.3X crop:
Normal photography distances: Some vignetting at f/4 and light falloff at the edges. Moderate, but not a black circle as some expect.
Easiest way is to crop it out. Frame loosely for this reason.
Macro working distance: Works great. No falloff that I can see. Wonderful stuff. I think the imaging circle increases. Based on the 5D shots I took, it appears the lens can cover full frame at macro WD, but the gigantic black streak across the bottom third of the frame is convincing me that the mirror is slamming into the rear of the lens. Someone please reassure me I'll be all right!
The 5D LOOKS fine.. will be taking it out later today for some work. Hopefully all will be fine.
)
