I am in Greece and this past week have taken two flights on Aegean flying economy. One from Athens to Santorini, the other from Mykonos to Athens. On both flights the gate agents weighed everyone’s carry-ons. Those over the published weights were gate checked.
I weighed my luggage at home so was able to board with the carry-ons, but there were many in line that didn’t meet the weight restriction and were required to check.
Hope this helps those who might be traveling Aegean.