I was in contact with both Ledger and Trezor a few years back regarding marketing on bitcointalk. Trezor said they'd consider it (but never looked into it further) while the ledger rep I was talking to asked what I could do with a $500/month marketing budget. lol
Out of curiousity, did they approach you? This would mean that, at least, they have the option deep inside their heads.
I like Trezor, I dislike Ledger, but I would promote both of them, since I am strongly in favour of well established hardware devices.