I hope that Ledger will implement too... there are so many good coins that are not yet supported by Ledger and Trezor...
If we consumers start politely bugging ledger team about adding NEM/NEM MOSAICS that would get DIMCOIN in. Then I'm sure DIM team would take care of the Depotwallet integration. They recommended users protect themselves with hardware wallets
that is definitely true, i think that the Nano team should have done that a long time ago, coz if Nem mosaics are supported on Nano ledger then Dimcoin also has the chances of being supported in their hardware, however, for now Trezor is on its way.