Yeah I have been listening to all of the Ross Bentley Speed Secrets podcasts and watching the Garmin videos, etc.
The main take away for making the Catalyst work most effectively I've gathered:
If you're consistent and never try new things, you won't have as much opportunity. The system will only coach you into doing what you've -already done-. If you can do this to establish a baseline, then go out and deliberately brake harder earlier, or trail brake deeper into a turn, or play with apex location, etc etc then it will give you immediate feedback as to what worked best, and IMO most importantly you'll have the visual reference for future when trying to improve further.
My wife got me mine early for Christmas so I'll hopefully have some data to share after this coming weekend.