That's a pretty sweet idea.
I think meeting a frame builder in person and geting to know him or her a bit is an extremely important part of buying a custom bike and put faith in it while rideing, and it's even better to have one or more acutal bikes to look at and share some ideas and explain what the options and benefits or drawbacks are.
If I'm imagining it right, the atmosphere could potentially be really relaxed and more inviting than a regular shop, since you won't buy anything either way, but it will depend on what you do with the inside and how the staff behaves. I guess they should be more like guides or experts instead of salesmen.
I wish I could go.
"Nothing compares to the simple pleasures of a bike ride," said John F. Kennedy, a man who had the pleasure of Marilyn Monroe.