The only advantage I see for the CF tube is better isolation from unwanted external light sources along with the baffling. The truss design can also do this with a shroud or lightweight liner.
Both have the focusers attached to the mirror cell, but maybe the serurrier design handles the sag.
The truss design has a dovetail half the length of the CF tube model. The aluminium dovetail's high thermal coefficent undoes some of the CF thermal advantage, so the shorter dovetail of the truss should be impacted only half as much.
I am asking that because I am considering buying an AT10RCT right away, so that it will be the AP telescope that will suit me for a lifetime. It is short enough.