As far as I understand from reading the code, an option to do what you want isn't readily available. If you want, however, you can make the necessary changes yourself - I don't think they would be very difficult.
You should start with "proc readlog {}". Somewhere at the bottom, inside the "if { [denycheck "$path"] == 0 } {" part, you need to add a check for type of log entry you are interested in, and print this message using "sndchan" instead of "sndall".
I think
