I find it interesting that Boeing started from scratch with the B777 wing and choose not to use winglets. No after sales option either...still.
If the folding wings options is true, then that is poor market research as no operator has choosen it. Boeing helped define the 80m * 80m parking box at airports, although not all parking bays are designed for this.
The pictures I see of the B7e7 shows it with winglets. Boeing appears to have changes their mind over winglets. Is the B777 wing a research platform or a mistake without winglets?