I think it would be fair to say that most IDers are also creationists; but not all. It would be just as fair to say that many evolutionists are also secular humanists, but not all; and secular humanism is a religion.
I, for one, have been open with the fact that I believe in both creation and ID. They are not incompatible.
Those who support ID/creation are not attempting to control science any more than evolutionists; and probably less so than evolutionists.
The fact is, there are lots of unresolved issues related to the truth of evolution; so many that no reasonable person would claim that the evidene reaches the level of proof.
I don't recall a single instance of a scientific organization suing to force religion to be discussed at the pulpits.
"Evolutionism" is a scientific theory, competing against other scientific theories, in the scientific arena...that makes perfect sense.
What doesn't make any sense, is the idea of religion entering the scientific arena in order to promote the notion of an unknown power greater than ourselves being the creator/designer of everything.
So, if you believe in Creation, you cannot possibly believe in ID because they are absolutely incompatible; ID denies the God of the Bible by suggesting that the source of Creation is an unknown force.
If you believe in Biblical Creationism, then you KNOW that force; it isn't unknown.
I don't recall a single instance of a scientific organization suing to force religion evolution to be discussed at the pulpits.