On my SxSs I much prefer the button in the trigger/trigger guard - as in the M-21, Ithaca-SKB and BSS. I use it pretty often when my springer is pushing a running pheasant and the flush is likely to come at tighter barrel range. In these situations I'm usually moving briskly to keep pace - so as not to stop the dog too often - and don't like to mess with a barrel selector that brings the safety into play.