I concur with Dave's findings on the weight of the 1620. Mine weighs in at exactly 23.5 lbs with the padded dividers. What no one else is talking about is that you can lose an additional 4.5 lbs by removing the bottom panel, wheel assembly and handle, bringing the net weight in at 19 lbs!!!
This is easily done with the proper square drive bit chucked into your choice of electric drill, and is just as easily restored.
Think about it, if you are traveling abroad, you generally have use of a trolly at the airport, other willing helpers (aka "dive sherpas"), etc. You don't really need the wheels, and wouldn't you love to have the extra 4.5 lbs for that extra body, lens, regulator, strobe, batteries, tools, spare parts... ?
Lauadi Bob Productions
Los Angeles, CA