will I be able to send Narrative NEP-5 tokens with ledger? (once ICO arrives)
Yes, you can send/receive NEP-5 Tokens with the NEON wallet and the Ledger Nano S. The NEON app will always be updated as soon as there is a new token.
Does it mean that I need to download and re-install Neon wallet each time when new token goes live? Is there any option to avoid it (import contract address or something like that)?