Thanks for all the feedback guys... I ended up going with a Blackwidow rack (if it ever arrives... Spoke to the guy from Blackwidow at the Brisbane 4x4 Show and they are having some "issues" in the workshop at the moment so delivery times have blown out).

Main reason is being able to fit the Fred's Arm (Awning Swing Arm) simply and quickly. Also went away from the Roof Top tent for convenience sake and brought a Conqueror EUV-345 trailer while I was at the 4x4 Show as well...