I don't even have Native Instruments Komplete.  I have Kontakt and that's about it.  (Well, I have Guitar Rig 5, but don't use it).
 
Nevertheless, I have a Komplete Kontrol S61 and couldn't be happier with a controller keyboard.  Great touch on the keys, the touch strip mod wheel is very nice. The keyboard/controller has useful, easy to understand features.  The sustain pedal works just as I hoped.  Playing Addictive Keys with it is a joy.  It's great. 
 
The light guide works with Kontakt and with the sample set of Komplete software that Native Instruments throws in with the purchase.  Third party libraries also work in Kontakt with the light guide.
 
Someday I'll save up enough to splurge and actually get Komplete.

The S61 was delivered yesterday and I am loving it so far. I am impressed with the way the light guide works automatically for keyboard zones on all Kontakt instruments, not just supported ones. (exception - Kirk Hunter, see thread on the Software forum.)
 
Some unsupported VSTi map quite well to the control encoders without any template editing. Synthmaster in particular where mapping changes with the patch presenting the most useful controls for that patch on the first or second page.
 
Others will need a little bit of work, and of course out side of the Komplete Kontrol environment you can always use the good old Midi learn.
 
 

There's a Groove3 tutorial now on the Komplete Kontrol series keyboards.  Nicely done.  If there was any mystery about the keyboard functions, the tutorial now provides a way to see how everything works.  It's short and sweet.

lawajava
There's a Groove3 tutorial now on the Komplete Kontrol series keyboards.  Nicely done.  If there was any mystery about the keyboard functions, the tutorial now provides a way to see how everything works.  It's short and sweet.

Oh, excellent. I have a "all areas pass" I shall go and watch it.

The Groove 3 video did not throw up much I have not figured out already but it did clear up a couple of points so it was well worth while taking the time to watch it. The most significant thing is it debunked miss-information I had got from elsewhere about MIDI output when using the scale, chord and arpeggiator modes. It is possible to capture this within a DAW as the Komplete Kontrol plugin will output the full MIDI. I have not tried to set this up in Sonar yet, but  its added to the to do list.
 
There is nothing about creating custom templates, but that was not to be expected at this level.
 
 

So - some more sucess this evening. I sucessfully loaded the Korg MonoPoly and Polysix templates downloaded from the thread on the NI forums. There are a lot of other templates, but I don't have those synths. It all seems to work well.
 
I confirmed there are no issues routing the MIDI out fron the Komplete Kontrol plug-in to a MIDI track in SPLAT and recording the chords and arpeggios as MIDI.
 
I managed to make a template in "Native Instruments Control Editor" that key mapped the zones for a patch in EastWest Symphonic Orchestra Gold. This is used outside the Komplete Control software and the configuration called up in the control editor. While its not as slick and automatic as the supported instruments its reasonably easy to call up. Next step to improve this templae is to asign encoders, this looks a laborious but straight forward. I am hoping that once completed this template  will only require adjustments to the key zones for th erest of EW Symphonic Gold.
 
All in all its working out quite well!
 

So a bit of a road block with non NKS Kontakt libraries. Is primarally a software issue so I started a new thread on the software forum.
http://forum.cakewalk.com/FindPost/3367122

Edit. Issue is resolved. Details in the other thread.

The S61 is turning out to be all I hoped. Now, if I could just add an extra octave 😊