Are there any contraindications? Advantages?
There's no contraindications to have bitcoin in two different wallet imo, and some advantages such as more secure due to you don't put all of bitcoin in one wallet and easier to spend bitcoin through electrum on phone and keep ledger nano S in save deposit box.
I had a dormant bitcoin account when the August and November forks. I have initialized the Nano S, but i am trepidatious about doing anything withoiut better understanding of
the consequences.
Is thaere a discussion, tutorial, other than at Ledger's site that I may study.
james-Osbourne
Do you ask about how to claim coins from the hard fork that happened in August and November?
There are 2 coins, bitcoin cash (bch) and bitcoin gold (btg), right?
You may easily claim bch by installed electron wallet (for electrum) and claim btg through coinomi wallet, and both require private key or seed to do it. You can read it here;
https://bitcointalk.org/index.php?topic=2062449.0https://coinsutra.com/bitcoin-cash-ledger-wallet/https://coinsutra.com/claim-bitcoin-gold-btg/