My experiences have been most positive with knives, but I have had a couple "malfunction" without any serious consequences. I had a SOG Twitch II that never worked properly.....
I really wish you had posted this 2 days ago. I've noticed my new SOG Twitch II needs to be "warmed up" a few times before the A/O feature starts to work properly.
It's not going to be an EDC. More like a Gent's knife for the rare formal occasion.