sendmail.cf: what if "Mlocal" is already used?

A traditional sendmail.cf contains usually something like:

Mlocal,       P=/usr/bin/procmail, F=lsDFMAw5:/|@qSPfhn9,
S=EnvFromL/HdrFromL, R=EnvToL/HdrToL,
                T=DNS/RFC822/X-Unix,
                A=procmail -Y -a $h -d $u

This is the standard procmail hook. I have a problem on a system that
doesn't have this hook:

I am working on a system that uses virge, an excellent virus scanner
(see http://vanja.com/tools/virge/).
The relevant lines in sendmail.cf looks like:

#Mlocal,      P=/usr/bin/procmail, F=lsDFMAw5:/|@qSPfhn9,
#S=EnvFromL/HdrFromL, R=EnvToL/HdrToL,
#               T=DNS/RFC822/X-Unix,
#               A=procmail -Y -a $h -d $u
MLocal,      P=/usr/bin/virge, F=lsDFMAw5:/|@qSPfhn9,
S=EnvFromL/HdrFromL, R=EnvToL/HdrToL,
                T=DNS/RFC822/X-Unix,
                A=virge -s $f -a $h -d $u

As you can see the procmail hook as been commented out. I want to turn
it back on!

Question:
- If I uncomment it, will it work? Does sendmail allows the "chaining"
of Mlocal?

Thanks for any hints.

Emmanuel


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