The first blade repels the water, the second blade repels it more,...
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Only if the high hydrophobic property is not easily destroyed by, say mechanical damage or adsorption.
The way it works is by creating texture on micro and nano-scale, which is in the ballpark of how sharp a razor edge is. So, this texture's robustness has to be similar to that of a razor edge.
I understand that peeing on such hydrophobic surface would avoid flushing, but the flip side is that it also means a rather dramatic backsplatter :)
Seen this on Fu** I Love Science on face book awesome looking steel
Whether it will hold an egde is a whole different story