I tried using both. I put Part I of the video on YouTube, then Part II on DTube to try to entice my YT viewers over to DT/Steemit. There's a link to Part II: https://steemit.com/steemsilvergold/@sbsparts/f0sxnjfo
I've had a lot of trouble as well with the DT uploader and have gone back to YT, keeping it unlisted like you have if I wanted to keep it exclusive for DTers. You can always go back and change the settings ;-)
Here's part 1 as well: