🌶️ take: The risk of leaving coins on a custodial platform far outweighs the risk of address manipulation during transit between an internet-connected device and a hardware wallet. The choice to omit a screen and prioritize making self-custody straightforward and usable is good. 
Discussion
Good to have options. The market will decide which design is better.
Man it reminds me of the original device this company gave out https://coinapp.co/
Was really hoping to try one of these in beta. As some who has always had issues with fingerprint scanners I’m pretty skeptical. Cool idea though