yeah that makes sense to make it just a checkbox in the regular connected mode instead of a separate mode.

fixed the syntax error and changed the order of the if test

great, didn't know that there was a negative bool type in the python api before.
also yes it fits better in with the color just one tiny thing in the description text,
its described as to clamp only negative values but its infact also clamping very bright values 1.0 / 255 +,
no big deal really and the text is long enough as it is already.

the patch adds a clamp option to the image sampling for the texture.
solves the issue of vector displacement maps being clamped without removing the brightness contrast functions.
it will default to on but not for old blend files.