I think there will most definitely be a diabolo workshop there, hosted by some knowledgable fellow no doubt, in which case someone might want to whisper in their ear about it. However, without any real set ideas or dates of anything of that sort, I feel it may be either a very long whisper or no whisper at all.
If there was an event going ahead, definitely advertise and plug it there, but interest isn't something that needs stirring up in my opinion, people will definitely want to go. A fair point nevertheless. It's always hard to get forum people to announce themselves in public, it's a bit taboo I think.
Chiok