Thank you very much for the detailed explanations to my questions. I do however have a couple comments and follow up questions that may also be useful for others, beside myself. Thank you in advance and Cheers!
Relating to your answer in #3) I was referring to a kit solely built from the Configuration-tool (no plastic holder / wooden case is displayed or mentioned here) - an answer to this would still be useful, albeit not of paramount importance. To answer given in #4) Is there a way to confirm this somehow? It is somewhat of an odd way of differentiating the two products indeed. For #6) I believe I was mostly just referring to the lack of 'anodizing' in the configuration-tool, yet it is clearly offered in the Pre-built kits.. Perhaps this is now standard practice?
1) The Whole Milled Clamps from my understanding is a new/improved version of the conical clamps, which prior were used to clamp full-flat ground/hollow ground blades - is this the case? Incase it is; Does it aim to "replace" the conical clamps, albeit being at a higher price point? What would be the preferred clamp of the two for any given scenario where these would be necessary? (reinforced springs not taken into consideration)
2) From my understanding of the answer given up above regarding the regular clamps allowing for thicknesses up to 7mm; do they would with hollowground razors? Most razors have a rather 'thick' spine and various grinds.
3) My understanding from the Venev Professional Square stones, is that their advantage comes from increase in length rather than width; am I right in this statement? Reason for asking being the fact that Venev sell stones with fitting notch and normal width with the exact same parameters apart from length being 150mm (and a slight decrease in stone height).
Link for reference:
http://www.vidbrusok.ru/collection/dlya-apex-edge-pro/product/150h25h10h2-75-100