Well, I have a similar ED110 f/7 as travel scope. I am in South Africa right now and took that scope with tripod to SA.
The ED110 weighs 6kg but I replaced the CNC tube rings (0.9kg !) by aluminum strips and the 1.2kg dew shield by Yogamat dew shield. The scope lost 2kg so it is 4kg now. And if I want I can put the original (and nicer) dew shield + tube rings back quickly.
So with an 102 f/7 or 80 f/6 the same can be done.
http://skysurfer.eu/AP110.php