Rainboe, for starters I have never had a SELCAL go off during a takeoff so my personal experience is certainly less than yours. My comments were directed at something less than 30kts and nothing more. Approaching 80kts might be a different story depending on circumstances surrounding the departure and it's certainly not a briefing item on any of my departures. Once TOGA has engaged it would certainly affect how this would be handled.
Cheers
