Since you are pretty much unknown, I expect trust issues: people will fear that - in a way or another - you may tamper those hardware wallets since you have physical access to them. Of course, re-packaging needs some extra care, but it's not that difficult.
People were advised all the time to avoid third party and order directly from the factory shop where possible (since even from Amazon it seems to have happened to receive HW with seed already in, I will look for link, but I don't promise results) and this may be a problem for your business.