syslog-ng?

[Disclaimer: I’m actually running OS X desktop, not server, but I think there’s no difference for this question.]

I read AFP548’s article about switching to syslog-ng. I’m thinking about doing this on my 10.5.7 box so I can filter out some noisy apps, but the article’s from 2006 and I’m wondering if ASL (Apple System Log) has changed in 10.5.

Presumably, I shouldn’t tell launchd that syslog-ng is a MachServices provider for com.apple.system.logger, and it won’t be listening on the /var/run/asl_input socket either. What happens if an app uses the ASL libraries to write to the log? Will the libary realize that there’s no ASL provider, and fall back to syslog? Or should I keep Apple’s syslog running on AppleSystemLogger, and set up syslog-ng only for the standard BSDSystemLogger?