In my head hardware wallet is not identical with cold storage. Maybe I'm wrong with the terms, however, I am also concerned that maybe someday, for one reason or another I cannot sign anymore with my hardware wallet.
(edit: yes, I know, I do have the seed and I can probably import it into Electrum or another Ledger wallet, still, I have my fears that things can go wrong)

So my suggestion is: use the hardware wallet for amounts you spend over a certain period of time (that depends on how much you spend, really) and for collecting/storing a 100% offline option is preferred.
The offline option will be either one or more paper wallets (private keys + addresses), either one or more seeds (BIP39 or Electrum) with some addresses at hand.
And for transferring from the offline sources to the hardware wallet (maybe 1-3 times a year) you make on your computer a watch only wallet for creating (step1) and broadcasting (step3) the transaction and a Tails OS USB stick for signing it offline(!) (step2).