It doesn't freak me out. I just don't want to have to buy a new Cam and lifter kit if I can't get it started and wipe a lobe. You do enough searching on this site and you think that happens most of the time!
So it doesn't matter when you do it. :D
Might as well while you are already part way there.
Really the only time people wipe cams is using too much spring during the break in.
If the springs are no more than around 300lb or so open, then you really don't have much to worry about.
