Did it, works fine. Expand the neck and decap in one stage. Trim to length since the case is longer than the '06 needs to be and the resizing seemed to make the case mouth jagged no matter how much lube I used.
I did it for fun, there is no real reason to do it unless you are completely overwhelmed with .270 brass since it is nice to have a proper headstamp on a cartridge.
That being said, enjoy.