Good point, yes, thanks. I should have been clearer - hardline *almost* to the caliper, but a flex line to enable maintenance.That is sometimes the case. The disadvantage to having a single flex hose in the center and hard lines running to the calipers, is the calipers can't be removed without disconnecting the hard lines and later bleeding the system. It also requires clamping the lines along the length of the axle housing and a tricky bend at the caliper.
I would always use a flex line at each caliper.