[logback-user] Logging encoded google protocol buffers with logback rolling file appender

Hi, I'd like to log google protocol buffers received by my server to a file, for later offline processing (the data is in a byte[]).  This is something I only do in when a debug mode is enabled, but it is useful for diagnostics. Ideally I'd like to use logback, but it doesn't seem to cater for binary data. I saw this issue: http://jira.qos.ch/browse/LOGBACK-232 which is marked as fix, and is a request for the same thing.  But I can't figure out how to use this with a normal rolling file appender. Does anyone have any examples of doing this? Cheers