YES.

IT IS A REASONABLY SECURE MODEL. SOMEONE STEALS YOUR HARDWARE, YOU ARE GOOD. SOMEONE STEALS YOUR PHONE, YOU ARE GOOD. SOMEONE STEALS BOTH, STILL GOOD.

VERY SIMPLE UX. AND INCREDIBLY HARD TO FUCK UP. PERFECT FOR NON TECHNICAL USERS.

MAIN TRADEOFF IS PRIVACY AND TRUST. A MALICIOUS APP SHIPPED BY BLOCK COULD DO DAMAGE. I FIND THAT UNLIKELY AND A REASONABLE TRADEOFF BALANCE FOR NON TECHNICAL USERS.