I've been toting the PS4 around for 5 years now. The dinky little scissors have held up just fine, I even figured out one day that they could be used as an awl in a pinch. The little flat Philips combo is great, works on a great deal of screws found on modern kids toys and the like. The knife blade comes with a poorly executed full flat / chisel grind that can be easily converted to a v or convex edge, but will never perform like a Victorinox blade without serious modification. There is simply too much material left behind the edge. The file is of poor quality but can be useful on rare occasion. The pliers are excellent and punch far above their weight.
The only other LM I would look at is the Style PS, it's missing the knife, file and medium flat driver, but is thinner and lighter than the PS4. In my opinion the P4 and S4 are not as nice to carry and use. The rivets used stick out quite a bit and tend to snag and make the handles less comfortable in use.
It's funny a while back I had tried to convince you to give the PS4 a try on another forum and you didn't seem interested at the time.
As for the firearm if you are open to suggestions I'm a fan of the S&W military and police line. The M&P Shield is worth a look IMO. Well priced, narrow, reliable, comfortable. I personally own the M&P 9, but have a coworker who owns and likes a M&P Shield 40.