I started working at my current company in 1999. It took them a couple days after my start date to get me an electroic swipe card to get in and out of the building. The short-term solution: a paper card with the signature from the head of HR authorizing me to get into the building and onto my floor, as nobody recognized me yet.
I still have it. I do not know why but it’s been with me ever since, moving from wallet to wallet.
There’s not a lock, but you can adjust the tension on the thumb slide and thus cause the slide to require more force to open. There’s a video on how to do that here: https://www.youtube.com/watch?v=aQ-atBnbQ7k
I don’t think it will open on its own in your pocket, but if you left-pocket carry, I can certainly see it opening accidentally when you’re putting something _into _ your pocket.
The Victorinox tweezers are… very low quality compared to other offerings. I’ve been using an ALOX Farmer X for a couple years now and I never miss the toothpick or the tweezers. YMMV of course.
I’d use a spray lacquer but only after the paint has been drying for 48 hours. You should do very very light coats many times. Too much and you’ll probably ruin the paint job. The lacquer layering will also take a while as you have to let it dry before applying more.
It’s very easy to get “lost” in the myriad of steel choices, handle material, blade shapes, locking mechanisms. I have tried to buy things I find interesting, but end up using only a few of them. I have discovered that, for folding knives, I’d rather have a few inexpensive ones with different uses than a single knife that is more expensive (and probably built better). But for fixed blade knives, I want to buy from custom designers and small makers.
As for your utility knife, you might have already discovered that knife companies are making fun and interesting folding utility knives now using the same razor blades you get at the hardware store. I just picked up the Knafs Yuti and for about a year I’ve had the CJRB Boxer. The Boxer I think is the best because it does not require a tool to replace the blade.