QTR-Quadtone RIP

Last night, right after downloading the new QTR realese, I did some 
experiments with the new 3 curves & split-tone feature (I'm using UT3D, 
Epson 2100 & Windows). I think this is a really good addition to QTR.

I'm wondering now what would be the best workflow......

Luckily, I can throw away all my various experimental split-tone 
curves. Making the first one was a bit complicated, but fun. But when 
you start realizing how many different ones you could/should make to 
exploit (some of) the full power of UT3D, that really drives you mad.. 
Although theoretically you now have "only" the possibility to adapt 
shadow, mid and highlights (and no cross-overs in between), my early 
experiments indicate this is more than sufficient. 

Theoretically, one could imagine a workflow with just three curves: 
warm, cool & selenium. But in practice that doesn't work for me. While 
I can envision how let's say a 75/25 warm/selenium blend will look 
like, I can't intuitively figure out in my head precisely a three tone 
mix, for instance how to make this previous blend less saturated by 
adding some cool, while keeping the same hue.

SI made an extra neutral curve and that is very useful for me. With 
these four curves I'm experimenting with two different workflows. 

One is to start of with a neutral print, than gradually add some 
tones , either overal or tonally splitted.

The other one is to decide on the tone/hue first by blending to toned 
curves (again either overall or splitted) and only when satisfied start 
adding some neutral to get the desired saturation (to my taste the 
maximum-gammut tones of the UT3D set are pretty strong and, except for 
warm, they always need at least a bit of saturation).

The last two workflows have in common that you actually split the UT3D 
color space in three parts: neutral-cool-selenium, neutral warm-
selenium and traditional" warm-neutral-cool axis (since the neutral 
point is very near/on the warm-cool axis). In theory One could regard 
this split a bit of a limitation, but in practice only if you want to 
go to three-tone splitting (such as cool shadows, selenium mid tones 
and warm highlights). I have tried a few of these, but presently I 
can't imagine this will become my cup of tea. It's jus t way to much 
for me.    

Wondering what you come up with...

Joost