I'll answer that two ways. First, when you're designing legislation it's not just for one particular group. The one thing about motorcycle gangs is they have trademarks; they have very clear indicia. Most criminal organizations are amorphous and they're very difficult to list. It's a very unwieldy and inflexible tool.
Secondly--and this goes back to my answer to Mr. Comartin--the trier of fact, whether it's a judge or a jury, needs context. They need to understand that if Mr. X is the president of the chapter of a particular outlaw motorcycle gang, what powers does that mean. It's not like the Canadian Constitution, where the powers of a branch of government are listed in a document. You have to explain that through evidence. So in terms of answering your question, I'd still have to call several days of evidence to explain the context of facts.
I may have a document that you may think nothing of when you read it, but in the gang culture it may be a very significant document, so I would have to call one of the very few experts in Canada who knows about that document. So the evidence would probably have to be repeated.