^^^ That's a strange take on the traditional bidon cage shape, and wide variants thereof.
7...grams...
Nup. What gives ... when folk sweat over such teeny-weeny details, yet don't think twice about putting two full 750ml bottles in the cages, adding very significant weight? My focus is not necessarily nor wholly on weight — gains or losses, but strength and suitability for the task. With the cages I have swapped in, I have gone back to the time-honoured robust form that we all knew and trusted so well in our bicycle touring days, often back then having 2 or 4 bidon cages (two in the triangle, one mounted each upper front fork) for long haul touring.
Titanium pannier racks didn't exist in the 1980s and 1990s, although Minoura did experiment with this material around 1995-1996 (?).
We were having enough trouble with Jim Blackburn alloy racks — notoriously soft and fatigue-prone material that pannier hooks and screws easily chewed through; breakages at the dropout eyelet where the rack attached were numerous. Karrimor didn't get off scot-free either: broken pieces were fixed on the go with a wheel spoke or two (carried as a spare inside the handlebars) and taped all along its length.
There is a Ti bike manufacturer in Geelong that also offers Ti bidon cages.
I'm not game enough to ask how much their gleaming bikes cost, never mind the must-have accessory of a Ti bidon cage or two — probably thrown in gratis after you've handed over the moolah...
• SILCA Sicuro 3-2.5 titanium cage