IME, ARMable is quickly followed by being ARMed (i.e. why bother assessing whether a woman is ARMable unless you want to do it?) and yes, I don't think necessarily required or indicated.

Is there any evidence that Drs insertions of prostin are less effective in inducing labour, despite being a bit "bish bash bosh"? I suspect that the exact location of prostin makes little difference, as long as it is basically in the right area. (e.g. intracervical gel - in regimes that used it - probably ended up all over the place and mostly not in the os - yet did work). Suspect that being "less gentle" also stimulates endogenous prostaglandins - similar to attempted membrane sweep on woman with unfavourable cervix.