Digital BW, The Print

Hi all.

I'm wondering (again) about changing from 3-MK to 3-PKW/PKN, to do
semigloss printing on my r1800.
So I have a few questions ...

I'm assuming that PKW will work with Carl's 3-PKN profiles?

Could (Carl/Paul?) someone comment on the warmth of the 'warm photo
black' PKW-ink on print,
will it look tinted with yellow/orange, or are the differences only
subtle?

Would the PKN become the same tone as PKW after the color ink in it has
faded?

Are there great differences in longevity between the the Eboni MK, and
the ink for 3-PKW



Lastly, have I got the correct ink here:  RC-WRM-4-PK (4oz.)
On this page:  http://www.inksupply.com/r260_blackandwhite.cfm
<http://www.inksupply.com/r260_blackandwhite.cfm>  ?



I'd greatly appreciate any help.

espen



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