Digital BW, The Print

I posted this question awhile back ("could an Epson 3200, or
other high-end flatbed scanner, be used as a densitometer
for measuring inkjet prints ?") and people suggested two 
problems: being able to read the high densities of the blacks
in a good inkjet print, and calibration.

I'd like to respectfully re-visit this problem.  A recent post
suggested that $28 would get me a calibrated reflective 21-step
wedge target (from www.stouffer.net).   By scanning this target,
using a fixed exposure in Vuescan that fills the digital dynamic
range with the wedge values, I should easily be able to build a
table of digital value versus density, using the raw file produced
by Vuescan (probably Gaussian blurred first so I get an averaged
value).   Then I simply scan my inkjet print with the same exposure
value and compare the measured digital values against a table
(obviously some automated interpolation from the table values 
would be handy).

The other issue is, of course, can the 3200 discern the deep 
blacks that hopefully will be present in the inkjet print ?
Well, supposedly its Dmax is over 3, and the wedges only go up
to 2.05.  And many here have claimed that print densities
over 2 are not discernable anyhow.  SO it seems to me that the
3200 SHOULD be able to measure all the wedge densities with some
precision.

Does this make any sense ?  Oh well, I guess I can find out for
myself for $28 ...

Thanks, John