Coming back from my first EA user group, I've been very pleased with the experience. I'm already looking forward to next year's session!
On arrival, I collected my badge and marked down the sessions I was going to attend. Only "down side" was the spelling mistake on my badge, but after all "Guillaume" is tricky to write and even worse to pronounce when you're not French, never mind ;)
First of all, this was an opportunity to meet in person members of the EA community, which is a change from the on-line forums, community site, and other LinkedIN groups dedicated to EA. I also very much enjoyed as a UML/SysML/EA enthusiast participating to talks and debates that purely deal with Enterprise Architect tool and other modelling aspects. This is a change from previous IT events where yet interesting technical talks hardly impacted my daily tasks and concerns.
I heard some very interesting discussion over the impact of Agile techniques on software embedded in intensive systems via Doug Rosenberg's talk. Feedback from the other speakers on EA, SysML, and UML based on their past project experiences prompted some very useful ideas as well ("harvest the existing information into EA" as suggested by Ian Mitchell). I was also impressed with the extensive use of EA API by some companies.
I will shortly release articles to provide more detailed feedback from London 2013 EAUG.