Oh, don't worry, I wasn't criticising your choice of the symbol (especially since it's used in a fictional 41 Millennium setting) but merely expressing my preference. Besides, it might be a sad truth for us pedants out there, but symbols evolve overtime or acquire new meanings, so griping over the current misuse of the Caduceus as a medical symbol would be pointless as long as most people looking at it understand the basic message being imparted.
Speaking of the Prime Helix of the Marine Apothecaries, It would be interesting if you tried to make a version with angular snakes to better reflect the similarity.