Getting more convinced that onboarding someone into Nostr can follow two paths: 

1. Onboard into a Client, not into Nostr. You "sell" a specific client and don't even use the word Nostr. You are onboarding people into Primal, Amethyst, Damus, etc. Not into Nostr. The protocol doesn't matter. 

2. Onboard into Nostr. If you want to onboard to the "protocol", you should onboard them to a Nostr app store, like Zap Store. The store will then on board them into everything else, including a client of your choice. 

In practice, you can choose to keep them attached to a brand or to take them into a freedom journey. 

But don't sell Nostr and then lock them into Amethyst. That doesn't work. Either sell Amethyst and get them into Amethyst, or sell Nostr and get them into a Nostr store.