I just flew TAP Portugal, who have a very restrictive baggage policy, seemingly strictly enforced for flights leaving their Lisbon hub and select other airports.
Their carryon size and weight limits are skimpy, though they did move the weight limit up to 10 kg recently. Their personal item size limit is laughably low if you can meet it, but it's just stupid low if you can't. That is - if you're traveling for personal reasons and can manage with only 2 kg, it's humorous. But if you're traveling for business and trying to put your work laptop and a bare minimum of plane necessities inside a work-appropriate bag (briefcase, work tote, backpack, etc.), it's no laughing matter.
Carryon: 55x40x20 cm / 21.6x15.7x7.9 in (8 inches deep is near-impossible to find in the US, BTW).
10 kg max
Personal: 40x30x15 cm / 15.7x11.8x5.9 in.
2 kg max
Online sources indicate at some airports, passengers are instructed to put their carryon on the scale and set their personal item on top. So, I could not bank on loading up my personal item with "all" the heavy stuff.
I had to put my work bag (a sleek Baggalini nylon tote) and my laptop inside my carryon. The tote would have worked, but would have been mostly empty, as it was too heavy with the laptop inside it.
When I left Lisbon for the US, they didn't actually weigh or measure any bag, much to my surprise. I have read they usually do, so they can fleece US customers for a checked bag fee. Since 8" thick carryons are so difficult to buy in the US, and Americans don't realize there are weight limits, it's easy money for the airline.
But for my trip, they just made EVERYONE with a wheeled bag check it. I assume A boarding group was allowed to wheel on, as I did see a few on disembarkation, but by the time I reached the gate, no wheels were allowed. There were some nice-looking, likely compliant, super-tiny wheeled bags in that line.
I breezed on by with my 9.5 kg backpack and cross-body purse. Thanks RS forums!