Digital BW, The Print

Question for Paul and others.  I am planning to move over to using the
K4 Black inks as follows.  I have a question about the use of Cyan and
Magenta.

Inks used

Eboni
PKN
LK
LLK
LLLK...LLK 1:1 with clear stock

Light Cyan Mix
Light Magenta Mix

My question on the Light Cyan and Light Magenta.  Is there any reason
why I should use clear stock vs using a light grey to dilute the Light
Cyan and Light magenta.

My aim is a relatively neutral ink set that can be manipulated to stay
more or less neutral on a variety of papers via the profile and rip.

Bob at MIS said I should use just the straight colors diluted in the
clear stock...but I am not clear why.  Couldn't I use LLLK and the LC
dilute in 1:1 or something like that.  My perception here is that if I
use too strong colors...it is harder to get just subtle tone shifts
without having to severally limit the ink limit...  Seems like a mix
of light black and color would accomplish the same thing with an added
advantage of adding one more channel of grey tone.

My ideal would be smooth as possible neutral...so the more shades of
grey the better, right? 

Not wanting to waste any inks just experimenting...hence my question.
Measure twice..mix once????



Thanks 

Phil