Quote Originally Posted by Allyrion View Post
The assumption here is if you get a proc, you probably won't get another for a while. So it's a dps loss to clip the current dot until you have to (a second before the thundercloud buff expires or so).

I don't agree with the assumption but the argument is sound.
There is no assumption on my part. The assumption you are making is that Thunder will fall off at an in-opportune time and have to be manually reapplied. This simply isn't the case. It should be up 100% of the time regardless of whether or not you clip it with thundercloud.