@Seb59,
Right now 'SUB' is an ERC20 token. So you can store it on myetherwallet and other wallets that accept ERC20 tokens.
Bob
can i send substratum to ledgerwallet nano s ? and how?
Yes you can send your Sub to your Ledger's Eth address and manage the tokens using MyEtherWallet, see the article here on the ledger site,