[QUOTE=nathank]
but i quit using it mainly b/c for me it was not so easy to push the button --- in many situations i needed both hands on the brakes and not on the horn...QUOTE]

Precisely why I use the whistle - hands free. God knows I don't ever need the whistle when I have a hand to spare, only when I need both hands on the handlebars and all my attention on the situation before me.