Provide facts. You can do the experiment in a few minutes, unless you are proven wrong. Remember that you have to wait for it to finish compressing before you tweet it out, so you have to come back and check a few times.
Just as an observation, I spent the last month on vacation, taking videos, posting them on YouTube and letting YouTube make the tweet when it was done. The tweet went out, my FaceBook friends were notified, life was good.
It only took as long as uploading the video. Maybe typing in a name. If you wanted to make it take longer, you could spend another 30 seconds geo-tagging it.
I did this about every day or two. Is that enough experience?
Biggest problem I had was intermittent and dropped internet connections. But the new Vimeo desktop tool is great at handling that.