The disappointment was huge!
If the characters are quite interesting and engaging (I have a little more respect for the character of Liara since), the drawing is uneven or downright ugly (and before we use this argument against me, it is not because it represents aliens). Colorization also fishing in places. The dialogues are fun, nothing more, and do not compensate opaque and obscure scenario. This comic was not designed with a view "all age" amateur, but for insiders who learned the game each entry in the codex by heart. Or almost.
In short, unless you are a hardcore fan of the game trying by any means to address a lack of Mass Effect until the third and final installment, go your way. And even, I would advise to start a game, just to have the pleasure of seeing real Turiens. With real scales. A beautiful texture. And no unclean and bland colors of Redemption.