The only problem with welding them to the lip is that your 10" rim turns into a 11.5" or 12"... I think that may be the purpose that guy cut the whole bead piece off of the rim.
My beadlocks are welded to the lip and they worked out great. ![Thumbs Up :thumbs:](https://board.marlincrawler.com/Smileys/marlin/thumbs.gif)
That's why you should never ever own a 10" rim unless you are using 15" wide tire