I have. Since I'm about a 45 minute drive to their King of Prussia location, my wife/me have been there several times - twice before I retired and twice for offered classes.
The good? They gave me (classes, held mid-day) pizza/soda. No, they certainly were not sales oriented (at least the one's I attended).
The bad? They were covering subjects that either did not apply to me (e.g. taxable investing) or details of investment strategies of which I was already aware of. The course outline/offering could have been more detailed, IMHO.
What made the difference for me was that I was able to talk to folks on their development staff that worked with the RIP (Retirement Income Plan) software and were located at that site. Since I had retired from the IT field, we were able to "connect" in our conversation, and I've been involved with some of their beta testing for revisions.
My recommendation? If it is within driving distance and the forum sounds interesting, go. If it doesn’t meet your expectations, don't go again.
Anyway, that's my "opinion" on your question...