Finally I have the KB I dreamed for long time, after a day spent in testing various switches and combinations I decided that clears with brown's springs is (by far) the best combination.
Then I had to swap the stems which, on a plate mounted and backlit KB, means 103 switches + 103 LEDs to desolder, 200+ switches to open, 400+ soldering islands to clean, 103 switches to reassemble, 103 LEDs to put in place, 400+ soldering points.
I haven't counted the hours, but likely are 5 o 6, for the whole process.
But the result is really worth.
The keys are soft but with a definite tactile point, the hysteresis is almost non existent, the keyboard has a nice sound, but w/o the high pitched click of the blue switches.
You can think to beige switch (this is the way I like call it ) as a blue switch, w/o the click and w/o the hysteresis, or if you prefer, as a brown switch with a more definite tactile feedback.
Although the images cannot show anything about the tactile feedback, I've uploaded a couple of them.
Edit: I used a gray stem (that looks almost identical to the white one) with the spring taken from a white switch, to give more consistence to the keys feedback, the original switch was just a plain brown, also the Black widow has a plain blue on the spacebar.