Thank you for this post as it reminds me. According to the engineer who put the trezor interface together, both hardware interfaces are in progress. However, he reminded me that the trezor interface is actually only good after the next firmware update.

Also looking for a thumbs up on this post (ledger support request)....

https://github.com/LedgerHQ/blue-app-eth/pull/28

That will get ledger attention

Thanks!!