You should be okay on that, the rest of the

man asl.conf

clarifies:

Messages that match the query associated with a ``claim'' action are not processed by the main ASL configuration file /etc/asl.conf.  While claimed messages are not processed by /etc/asl.conf, they are not completely private.  Other modules may also claim messages, and in some cases two or more modules may have claim actions that match the same messages.  This action only blocks processing by /etc/asl.conf.