At the risk of sounding like an ad, the "Elala Pro Rideable Carry-On" is 21.3 x 9.1 x 20.5 inches

Edit: the one in the larger top image is the "Master" model at 24.5 x 11.1 x 23.3 inches

It's technically a little wide but the carryon I use is technically wider than allowed and they don't care unless you're in the last boarding groups of a full flight

I live in the UK and regularly travel to and from the rest of Europe. Never had my carry on luggage weighed. Not on the way out or the returning journey.

I check in online and rarely travel with hold luggage, usually only a big rucksack to carry on, so maybe that is part of the reason. Though one would think that would make them want to check the weight of my bag more??

I dont even know where they would weigh my carry on luggage as I don't use the check in desks. Unless they discretly do it while at the security scanners?? That would be news to me.

Maybe I've just been lucky.

and in Australia

Considering how many aviation disasters are a result of incorrectly weighing passengers and luggage, in addition to incorrect weight distribution, I can understand the caution

I've only flown maybe 6 times from Europe, 2 domestic/Schengen and the rest international. I'm only counting the times I started at an airport within Europe.

So far never had my carry on weighed. France, Germany, Switzerland, Denmark, and Portugal.

Not saying it doesn't happen just curious how common it is