The warlord trait: eye on distant events reads as follows... Choose d3 units in your army. These units get the scout USR.

Several other Eldar warlord traits specifically mention that they only work on "Eldar faction" units, but not this one. Can allied units get scout?

Can units with scout confer it to non-dedicated transports? i.e. do SM scouts give a scout move to a Landraider?