These are two very different fragrances, Pappy. Like you, I love them both.
Trying to think of similar ones is difficult... you could try layering a little Le Male with a little D&G PH to approximate The Dreamer. Terre d'Hermes is more problematic because it is so unique. I don't think Lalique's Encre Noire comes anywhere close because it is predominantly vetiver and has nothing of the orange, pepper, cedar combo of TdH, not to forget the flint/iron filings which fascinate me. You might like Lalique Equus, if it's the cedar note you like. Or perhaps L'anarchiste if it's the orange. Layering the two might be interesting!
