and that is why a lot of people think of timing on an ILS, a lot of us had it pounded during inst rating to always run the time, so if you lose GS your still ok,( works in the cessna) however like you said not allowed in this 121 world. I too would go missed and come back for the loc approach after briefing it, however, i still occasionally when doing NFP duties and building an approach, sometimes find myself dialing in the countdown clock, old habit...lol