I like Mors Principum Est, and they do sound like Omnium Gaherum, but they have done nothing groundbreaking. They have more consistency than CoB, but they're not too different sounding.
Their style isn't ground breaking, but in a world full of melodic DM bands they stood out for me for some reason. I love Callenish Circle too. Got all their stuff. The song "My Hate Unfolds" never gets old no matter how many times I listen to it. You have good taste my friend.