Pace -
Icing conditions may exist if there is visible moisture and the temperatures are correct for icing to occur.
But the keyword is visible moisture and whether there is snow there or just plain rain is irrelavant.
The last sentence of that quote implies you view both snow and rain as visible moisture - it may not be the way you intended it to be read but thats how it comes across to me.
You will get rain out of clouds as well as in clouds. That may fall as rain as you climb through the clouds but then when the temp drops to zero that rain will start to form as ice on the airframe.
Not quite sure what point you are trying to make here - all you have said is that icing conditions exist in cloud below zero, which we all knew anyway
taking off in rain at the wrong temperature most certainly is a problem in or out of cloud.
How is taking off in rain a problem unless it is freezing rain? If the OAT is above zero it's not freezing rain because the airframe is above zero - I think this was one of your points many posts ago. If you are in cloud below zero you are in potential icing conditions whether it is raining or not.
Scooter Boy - I was trying to make the point that freezing rain is relatively easy to forecast because it generally requires quite specific conditions to exist (active warm front, sub zero layer beneath etc)