Thanks Donald.
What I actually meant is application of incident petering from practical standpoint. No doubt it offers the most reliable exposure, the question is how it can be physically applicable for landscape shooting.
Say your composition in the finder is a a landscape and certain landmark you focused on and the rest of entire field of few of the lens.
As far as I understand, to apply incident method you have to approach the actual subject and meter the light falling on it durecting the dome towards the light source.
So the question is how "approachable" could be landscape shooting for such kind of metering ? :-) Seems to be impossible at all until I do not understand the principle of incident metering.

Am I wrong ?