The choice of these roman characters can be excused simply for their aestheticism and result of an impossible number, see Nonroman numbers. They had no meaning when chosen for the branding by Devine Lu Linvega.
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Uriel: Haec maxime' respicunt Michaelem. Michael est Angelas; qui illuminat gressus tuos. Et haec revelantur in virtute et veritate non Vi. Ehrivevnv, sy. Heriven, appears on the XXIIVV sigil. The acronym recalls a sentence from Uriel(VR) to Dee(△) regarding the "Aldaraia sive Soyga vocor".
The reason why this quote in particular has been picked to represent the Neon Hermetism remains unexplained.