Makes me feel better. Come from an ice climbing background where I always used double ropes. Lost a good friend a year ago rappelling rock. He never tied auto-blocks (redundancy) and took a 30m fall on his head because his ATC wasn't threaded right.
Redundancy, and he'd be alive today.
A couple near-misses over 15 years of near daily climbing has convinced me that redundancy in climbing system, TIP ...etc is better insurance that I'll see my little guys at the end of the day.
A few months in and I don't find I'm much slower than before. Sure, slower, but not much. Still making $$$ on jobs. Feel a Heck of a lot safer doing it.
Whether operator error or manufacturers defect, if you rely on one system, failure is failure and dead is dead.