Yes,
Continuism is the same as what you are referring to as Historicism. I prefer the former label though, if any be given. It was the title by which Charles Spurgeon referred to this method of interpretation. The reason I prefer the title Continuism is because I think it to be a more correct discription of the school of thought. Historicism implys that everything is in the past "Historic" if you will, this is not a correct understanding concerning this belief though. Continuism/Historicism is the belief that The Revelation of Jesus Christ has been unfolding over the entire age of the Church, from the first coming of Christ until his second coming. So, it contains elements of both preterism and futurism, and ofcoarse its own elements concerning the unfoldings and symbolisms of events which I am sure are somewhat disagreed upon amongst those of this belief.
I am a practitioner of the martial art Jeet Kune Do, which was created by Bruce Lee. Lee taught Martial Artists to "think outside the box" of martial arts systems. Some were following Kung Fu/Gung Fu others Karate, Tang Soo Do, and so forth. Lee taught that we should learn as much as we can from each system and keep what is useful, and so he evented a style which is a blend of different styles and has no borders or bounderies. Biblical interpretation I think should be come at with the same understanding.