Really want to know too... Typography and logo for Luke Meier's were done by ill studio.
There's also another sample that looks to use the same typeface. A modified version is attached... Hope that helps.

anybody have a clue about the origin of this script?

Nothing really came pu since for me. Most probably a custom job. For what it's worth, if I have to redraw it, I'd probably start from some Garamond Bold Italic using some stylistic alternates for /L and /M and customize it.

For your information, I am the designer of this work. And the type is hand drawn. This is not a type customized. It's handmade. ;-)

Thanks Thierry! Excellent job, great style and execution.

awesome!