The modern Victorinox Executive Swiss Army knife offers the most functionality in the comfortably pocket-sized 74mm / 3" format. It is ideal for the business executive. Judging from the paint stains we see on many of the used knives that come in, the Executive pocket knives also work well for construction workers and many other folks. We've heard that the orange peeler is an excellent tool for removing paint from the crevasses in fancy mouldings!
There is no similar Wenger or Leatherman tool.