The teams I work with are fairly good about not over-doing Slack. They respond when it works for them, and nobody has expectations of real-time discussions.<p>And yet, if we have a server go down, or some other such event, we normally first hear about it from the support team, who gives a heads-up in a channel shared with dev and ops, and whomever is free jumps on it, and we get the problem at least narrowed down to a cause and people acting on it within minutes...<p>And 10-15 minutes later, when the rest of us also look at the channel, the problem already has someone acting on it, and often it is already resolved.<p>In short, I see no reason to slow people down artificially.