A workshop is a good way to familiarize people who want to understand. I think it totally depends on your presentation.If your audience have a really old school mindset you're going to need to present it in a way that compares the old ways that they do things to how bitcoin and cryptocurrency works.
Put some time into this and become an ambassador of bitcoin if it's something you really believe in.
For me, one thing that is very appealing about bitcoin is that you can put it in a physical hardware wallet or software wallet and go anywhere in the world and convert it to the local currency without carrying a large amount of cash or currency on you. I know you can do this with banks too but its a more private way of doing things. Even though the FBI is mapping out bitcoin wallets and trying to figure out everybody in the world's bitcoin wallet. That's a different issue though.
This is a very complex subject and I think for now to break it down into a simple and easy to understand way is what you would want to do.
An analogy I might use would be how debit cards/credit cards first arrived onto the scene and people were wary because they always used cash. Well debit cards and credit cards use some sort of backbone service like SWIFT to handle their transactions. This can take days to settle a transaction with SWIFT. Bitcoin is like a newer credit or debit card type of transaction where it settles in minutes rather than days and is on a blockchain that is verifiable with more security and nobody controls it.
Just my 2 cents
Cryptobeard