Ruby's Greek Thread

[Ruby Novacna]

And the key point behind all of this is that comparisons with real-world letters can only make sense comparing the original Voynichese letters themselves... not with EVA or any other intermediate codification.

And what exactly do you mean by "original Voynichese letters"?

The letters written on the Voynich manuscript.

The "letters" of the manuscript have been given nicknames by the transliterators. Furthermore, EVA is not the only alphabet used for transliterating the VM.
If you want to know what the letter in the manuscript, nicknamed "k" in EVA, looks like, it's very easy: the transliteration file, available online, will guide you. 
Then, it's up to you to decide what name you will give this "letter." 
Is it a letter, a syllable, a numeral, a scientific symbol? 
The choice is yours.