I use a small flat screwdriver to de-moon my .45 ACP moonclips (625-3 and 22-4), and it works just fine. I also check flatness by laying them on a table. If one of the wings is a little bent, it's easy to move it back to where it needs to be.
IIRC I bought a pack of 20 blued steel moonclips from SG for $10.
I think some of you guys make it harder than it has to be.