Changin flow with keyboard shortcut would be nice. Like in Irssi alt+1, alt+2...
Switching flows with cmd+number has been implemented in the OSX app.
Jonas Berlin commented
Now that flowdock has an irc server, it serves as a nice alternative ;)
Raine Virta commented
The only way I can see this happen would require a page refresh when the flow is changed. This is because flows haven't been designed to be changed on-the-fly. Would you be happy with that?
For a rapid access to each of your flows, currently the best option is to put your flows in separate tabs in a dedicated browser window. That way you'll also get growl notifications from each flow—if you're on OS X, that is. :)