Hello Radu and all,
Not to throw a wrench into what is kown about the lohar and to confuse matters further, but here is a short clip - from the movie Exils - that shows an Algerian percussion instrument (likely Kabyle) that uses a drum-stick very similar to the lohar:
http://www.youtube.com/watch?v=tzmbTCQxHMw
it is used in conjunction with a regular drum-stick.
I'm sorry but the view of the instrument in the clip is the only one in the movie...I've tried researching this instrument further, but haven't fount anything yet. I hope this isn't entirely irrelevant.
Best regards,
Emanuel