The big thing for me is that this summarized/editorialized version shouldn't be what you (the one with the career) manage on a regular basis. You should have a source of truth that is far more comprehensive (and manageable) and which allows you to create this summary version easily.
On another note...I've been writing a lot of web copy lately and I've started seeing a lot of similarities between good web copy and good resume copy. Resumes are marketing tools, and don't you forget it.