Leica cassette lugs

["joe b." <joe@azurite.demon.co.uk>]

In message <v01530502ad91cf03676a@[205.138.41.81]>, Ken Wilcox
<wilcox@umcc.umich.edu> writes
>Cassette lugs are the little whatchmacallits on the inside of baseplate on
>the film chamber side. When the locking mechanism on the baseplate is
>turned, it opens the Leica Cassette inside.
>
>Leica cassettes are film cassettes that were once sold by Leica. Many of us
>who bulk load film use them. They are VERY heavy duty and designed to be
>light tight when out of the camera, but to open inside the camera to allow
>the film to spool out without touching anything. No scratches!

I'm not clear about this; does having cassette lugs inside a Leica rf
body also imply that I can't use normal film cassettes in it? 

Or does it just mean you can only use Leica cassettes in a body that has
the lugs?
-- 
joe b.