Turned out great! Was planning to design something like this myself at some point but glad you got to it first.
Printed on a MINI+, using a mix of Amolen GITD PLA & Clear Jessie PETG with the 0.20 mm Structural Preset, adjusted to have 3 perimeters and 15% cubic infill.
For anyone else printing this later, would recommend keeping the "ClampInsert" object (or the screw placed in the bottom of the clamp) oriented with the threads perpendicular to the build plate, as this particular design may induce shearing if its printed with the threads parallel to layer lines. Used some organic supports only on this part to keep it oriented this way. (edited)

@ahmednada Thank you for sharing your make!
Love these! :-)