Metering in Manual

This is probably a really stupid question and sounds elementary.
I am of the opinion that, it does not make a difference if I shoot in any metering mode (evaluative, spot, ect) when I have determined the metering with an actual light meter and set the camera to that what the light meter is correct for that situation. Am I correct in my assumption or not? I am assuming that manual means manual and I'm not trying to correct anything within the camera?

You are correct. If using an external meter and M mode just dial in the values from your light meter.

Thank you very much. I did have this arguement with another person And it just did not make much sense. Again Thank you.
Russ

For a second opinion...yes, if you set a camera manually according to a meter reading in your hand and take an exposure, it is no different than having the camera do the exact same combination of f/stop and shutter speed for you in P or Av or Tv and take the exposure...except YOU are in control!