I've worn both Lurid Library and Philologus before, but not tested them against each other -- so tonight, I have Philologus on my left wrist and the Library on my right.
Library is coming out sweeter and more incense-y, but Philologus smells much more like old books to me.
Both are extremely agreeable in their own way and this is still not helping me decide which should have a place in the gridded part of my BPAL box that only holds 9 bottles.
I sort of impulse-bought a bottle of Unveiled on the forum just based on the notes listed... NO REGRETS. NONE. I tried it yesterday and was in instant love, had to wear it today even though I have reams of things yet to try. It's a little fruity and fairly floral and a bit dark (maybe the myrrh? it's almost incense-y) and overall perfumey in the BEST way.