Regardless of how thin the Karma gets spread it still gives Awakened a chance to be viable hackers without harming their essence with a CyberJack.
Cyberjack is not mandatory and doesn't really even add any value as long as you are hacking via AR and as long as you are not attacked.
A magician (that already have a focus in Logic anyway) can already also be a hacker by using a regular mundane cyberdeck (to enable attack and sleaze actions and matrix edge actions) + commlink (for basic firewall and data processing) + trodes (for DNI if they want to go VR).
0 Essence.
Karma is still needed for Electronics skill and Cracking skill.
Rest is just resources (and if you don't care about matrix AR you don't even need to invest that much resources).