I have a Gitzo 1327 with the "twistlock" legs. Like a lot of people I still get confused sometimes about which way to twist to open and close, and where to start, top or bottom, to shorten or lengthen the leg sections. Otherwise it's a terrific tripod and is still working just fine after 4 years and several hundred field trips. But the new g-lock tripods are intriguing because they seem to do away with the whole one-way pattern for open, closing, shortening or lengthening the leg sections. Has anyone compared twistlock vs. g-lock?