Yes, I concede that the elbow escapes are always useful. Sometimes I make use of Headlock Escape 1, also. I am not saying that it's useless, but it is clearly a cirriculum designed for opponents who are displaying a very specific type of action / reaction. Very few people exhibit these same reactions during rolls or in a tournament, in my experience. On the other hand, it could be an incredible coincidence that every person I have ever met who is trained solely in Combatives gets crushed in rolls and tournaments against people of their same rank.
Edit: After re-reading my original post, I have to say that if you read my post, you clearly missed the part where I said that some techniques are always useful, and gave examples. If this is about whether some of Gracie Combatives is useful in rolls (which it is), or ALL of Gracie Combatives is useful in rolls (which it isn't), then I would be happy to cite examples of techniques which are clearly not useful.
Edit: After re-reading my original post, I have to say that if you read my post, you clearly missed the part where I said that some techniques are always useful, and gave examples. If this is about whether some of Gracie Combatives is useful in rolls (which it is), or ALL of Gracie Combatives is useful in rolls (which it isn't), then I would be happy to cite examples of techniques which are clearly not useful.