Analysis of information sources in references of the Wikipedia article "Quickdraw" in English language version.
In most situations ... the gates of both carabiners should face away from the direction of travel of the climber.
The carabiner gate must always face away from the climber's direction of travel. ... The anchor-end carabiner must be mobile (no STRING). The rope-end carabiner must be fixed (with STRING).
safer to keep the gates facing the same way ... it's safest to keep the bottom carabiner fixed to the QD's webbing with tape or a rubber O-ring, but not the top biner
safer to keep the gates facing the same way ... it's safest to keep the bottom carabiner fixed to the QD's webbing with tape or a rubber O-ring, but not the top biner
The principle is that the gates must always be pointing in the opposite direction to the climbing route
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