yes, the screws in the photo worry me, too. but here is a quote from another thread from jonas, author of
www.doublebassguide.com:
"The screws aren't necessary, the saddle also works without them. However, it's fits better with the screws, and the rather small holes can easily be retouched in case of a removement of the saddle."
there is also another photo on moser´s website I found just now, where it seems that there are no screws necessary, perhaps a newer model?
http://www.moser-klangwerkstatt.com/...produkt3.shtml
I also attached the image.
anyway, I am going to visit mr. moser tomorrow, and then I will see.
Edit: for the non-german speakers, here´s a quote from the german page (which is different than the english one):
"Für die Montage ist weder eine Verleimung noch eine Verschraubung notwendig. Der Einbau ist bei genauer Maßangabe in jedes Instrument möglich."
my humble translation:
"it is not necessary to glue or screw. the assembly is possible on every instrument"