With the exception of my delica I've pretty much modified all my knives in some way
Each one has its main use eg: Spyderco's for SE or BM Onlaught for slicing
For work, I typically only rotate the shorter knives on the right to avoid alarming people. I don't carry the cold steel spartan anymore but still keep it in my collection for fun
Always have one of my leathemans and prytools for work. I do carry a SAK as well sometimes. I've been in situations where I've had to hold a nut with the LM and turn the screw with the SAK
After work or weekends only carry one of the multitools or SAK's above