I took SQ from New York back to Singapore..and I basically bought all my equipment in the US. This is what I carried back in my hand luggage
In Timbuk2 messenger bag
- sleeping bag
- 1 super thick & heavy fashion magazine
- T61 15.4" laptop (i bought it there...)
- T40 14" laptop
- 2.5" portable HDD
- Intuos 6x8 tablet in box
- 3 novels
- change of clothes
- chargers and cables for laptops
- Entertainment pack consisting of PSP, iPod, and portable battery
36L backpack for camera equipment:
- 5D + grip
- 350D
- 17-40, 70-200/4, 2x 100mm macro, minolta 58/1.2, 50/1.8, 35/2, 85/1.8, 24/1.8
- EX580II flash
- various hoods for all the lenses
- 2 sets of batteries and chargers for cameras
- tripod + ballhead strapped to the exterior of bag
I think everything must have weighed maybe 25kg? But they didn't make a fuss about it at all, and I put everything in the overhead bin.
When I go on dive trips, my camera equipment weighs about 17kg (the housing and strobes weigh a ton!), and I usually put everything into a rolling cabin bag. This way it looks lighter than it really is and no questions asked.
I have a lady friend who's about 1.6m who carried everything in a Computrekker Plus, but was stopped for weighing. I guess the bag looked too big for her. The same bag was on a South African friend of mine who's 6ft 2" and weighs like 300pds, and he got through in a breeze.
Hope your trip goes well!