Planning on making one for mine but, yeah. Getting to the beam a la a Beetle is kinda tough. And once you get to it, how to attach? You'd have to jack the car up and crawl under, every time, hooking it up and taking it off.
I plan to build mine to integrate with the frame extensions I welded on the front. I welded nuts in the top for bolts to come through from the bottom, which are just reachable from the front of the car if you lay down, and the jack points work now so they can be enlisted as guide points for the tow bar.
It's gonna be a one-off but I'll post in case the design might inspire anyone else.