I like the Pingo. I am going to get an Orange one. I like slip joints and lock ups so that's not the deal. For me I found my collection so swamped with auto-assisted, clipped so called tacti-cool folders, I wanted to step back, go a bit more old fashioned. I'm really enjoying my set of Bugs quite a bit. I always carry at least one, in addition to my Clipits. Really though, not every cutting job requires one hand assisted opening, combat ready grips and blade configurations do they?
Besides... I would like to think that those of us who like slip joints, be they Bugs, Pingos or a good old Texas Toothpick are smart. We are choosing to carry knives that are under the radar in regard to laws that are limiting our options to carry anything we want. These "little knives" aren't looked upon as weapons in most places.
Socially these knives don't get "those looks" and raised eyebrows when you take one out to cut something. In the office or at the hardware store it's not unusual to open a knife with two hands.
Enjoy your Pingo. You are ahead of the curve.