All of the semiautos that I have owned have come with FLGR. While I have often read of the belief that a FLGR will prevent the recoil spring from kinking, I have never read of such an occurence. It may be
that it is more of a feel-good measure than anything else, but even if not, where is the harm?
In that it makes it quicker to disassemble your 1911, as I have seen demonstrated on one of the TV gun shows, fine. But...unless you are in a gun fight where you must
disassemble your 1911 in a hurry - who cares?
I think this is a moot issue; that choice of defensive ammo and your ability to make combat accurate shots is THE issue, although only slightly more important than the price of good beer.