It depends on the knife and the situation. I'd say I like the clip but sometimes remove it.
For typical EDC (I don't work in an office much,) I clip my knives into the FOB pocket of my jeans and work pants.
As I tend to put my keys in the right pocket, I will sometimes clip the knife to my belt on the right side. For an alternative carry method, I use a snap-buckle Benchmade pouch. The clip stays attached, goes over the opening, and the pouch flap covers it. This makes for a very secure carry.
Cheers,
Joe