If it doesn't require any extra effort to get the endorsement, ask for it! You should qualify with your backround. It would suck to miss a future opportunity because of it.
While researching the CFR's to get my license, I noticed that I met the requirements for a Chief Purser. I went ahead and got it just for the heck of it. But knowing that I may want to work ashore one day, it may help to have it on a resume, you never know.