I have been thinking about this topic for a long, long time. I am not currently in management, but I do work in a position where business casual is required, and carrying a knife clipped to the pocket could quickly result in termination.
There are a lot of factors to consider when deciding whether you can carry a knife clipped to the pocket once you are in a management position. If your peers and subordinates don't mind, it might not be an issue. But all it takes is one person to be uncomfortable and report you to HR, then you have a problem. The other thing is most knives with pocket clips will wear out pockets very quickly. There are a few knives that won't (I carried a Kershaw Leek in slacks for years with no visible pocket wear. The other knife I would consider, if I still had the option to carry like this, would be the Spyderco Chaparral 2).
I think you have the right idea in considering carrying your knife in the bottom of the pocket, not clipped to the pocket. I also think you are on the right track thinking Fallkniven U2. Also consider the Spyderco Air or Benchmade Megumi. Slightly larger but also pocketable with removed clip, would be Chaparral or BM 707.
Not much else I can think of unless something like a Buck 55 would interest you.