Raesh, I hate to be bearer of bad news, but after doing some testing today I am pretty sure that RS is not more difficult to and from qi than it is on the mainland.
My data is here:
https://elanthipedia.play.net/mediawiki/index.php/Riftal_Summons#Distance
For comparison:
https://elanthipedia.play.net/mediawiki/index.php/Moongate
https://elanthipedia.play.net/mediawiki/index.php/Teleport