Elevator setup by pull-pull or servos in tail is a matter of personal preference.

IIRC Lassi is preferring pull-pull elevator because of easiness in setup and amount (lack) of maintenance. Also stability of elevator trim is leaning towards pull-pull.
However, everybody is not sharing this opinion (myself included).
Glacial is setup so that both ways are possible. In one of the photos above you can see a paper tube for servo cables going to tail. A bellcrank elevator can also be built if desired. You need to build it yourself though.