It's useful, but too pricey - not so much the 30 points, but the opportunity cost of losing 30 points of the 35 in positive qualities that you can get - you can be an adept, or get restricted gear once, but not both; you can't take any adept Ways, etc. I am mentioning adepts because frankly, having an adept, and being concerned about how much 'ware you can squeeze in 1 or 2 points of Essence, is the only reason to even consider this quality. For mundanes, it is not as much of a big deal. Bioware is already Essence-friendly, and most mundanes will have more cyberware than bioware, halving the Essence cost of the bioware.
A better quality, in my opinion, is biocompatibility, a flat 10% discount to Essence cost that can be taken for bioware (all bioware) or cyberware.