Thoughts on mega lucario with Dachsbun?

I play mega lucario with the 2-2 Hakiyama line. I also see people using dudunsparce, but today, in a mirror matchup, i saw a version that had neither. Instead he ran dachsbun to heal his mega lucario, which i thought seemed quite smart. I won, but barely. I'm still quite new so this looked unusual to me, i apologize if it's actually common.

I understand wallys serves the same purpose, but it's easier to pull the dachs than the wally.

What do you guys think about running dachs in mega lucario?