I think it is great that svonkampen has done these, because as he said it is study of a master.
Concerning other composers I agree that scores are imitating Herrmann a lot, but usually without the artistry. He essentially created a minimalist art utterly by himself, in an extremely original fashion, by going against the grain which - when he started on Citizen Kane (how is that for your first film? - the movie generally considered the greatest film ever made) - was basically the Max Steiner-Erich Korngold-Franz Waxman-Leitmotif style, derived from Wagner's operatic style. It was good in the hands of those composers, but Herrmann showed that the leitmotif was not essential, but simply a choice the composer could make if he wanted. Before his music, it was considered absolutely necessary as a way of unifying a filmscore (if such a thing were to be attempted on a sufficiently "serious" film production). Herrmann then proceeded to develop it into a brilliantly self-contained style of his own in which recurring motifs were developed in a more symphonic and less operatic way. He derived much of his own harmonic style from Rachmaninoff (as in Isle of the Dead), Debussy and Holst - late Romantic-Early Modern orchestral tradition, with extremely vivid orchestration that rivals the greatest classical composers. In fact, I think he is the greatest orchestrator of all film composers or pure film arranger/orchestrators. You will occasionally hear something completely off-the-wall he did not only for a big film production but in some of his TV scoring - such as one Alfred Hitchcock Presents I remember in which he did the entire score FOR BASSOON ENSEMBLE ALONE. And it was absolutely perfect for the picture. Or the instrumentation for "Journey to the Center of the Earth" for twelve harps, five organs, brass and percussion. Or the score for"King of the Khyber Rifles" for massive percussion ensemble, or "The Twisted Nerve" using a whistler soloist, or "Sisters" using analog synth, strings and percussion, or... etc., etc., etc.
He is now being almost universally imitated, particularly in his use of "dark" parallel minor harmonies, heavy low brass and winds, and recurring motifs. Unfortunately, they are always the same harmonies, and the motifs are not developed in other composers' scores in the powerful, imaginative way Herrmann himself did. Except in a few, such as Danny Elfman who is probably the best of the American Herrmann-influenced composers. I was very disappointed by the Batman Begins score, which seemed boring and droning to me compared to the fabulous Elfman score in the original Batman. Though it was obviously in the Herrmann mold.
Sorry to go on but it is a fun subject to talk about...