Compatibility of security mirror

[Lee Winter <lee.j.i.winter@gmail.com>]

The security mirror at security.debian.org appears to have a structure
that is compatible with the main debian mirrors.  If that appearance
is an accurate reflection of reality then the updates/main/* tree
should be compatible with the main/* tree.  I use the term compatible
to mean that a local mirror could be composed of the main archive plus
the security updates and thus require a single entry in the client
machine's sources.list file.

Is that appearance accurate?  Can security update be stored in the
same directory tree and accessed by clients transparently?  If so, is
it possible to merge the updates/* folders into the main repository or
do they need to remain underneath updates/ ?

Thanks for any info or suggestions,

Lee Winter
NP Engineering
Nashua, New Hampshire