It's all of the above. I think it has to be both. I think if you have some sort of national registry where you have all of your mentors catalogued so that it can be leveraged by an organization like Startup Canada to help facilitate that...but all of those mentors will be the same mentors who go to that coffee shop.
So I think it's just how you execute it. I think some sort of registry is valuable, but I think it's all of the above. It's mentorship however it happens.