Yes, I have the Rezloh tooth bar on my bucket, it is really great for all my uses. I like it so much that I had it welded on. Does a fairly good job when digging and just in the last few days in breaking up the ice that covered my driveway. The ice was so hard that driving on it would leave NO tracks. But I was able to backdrag with the edge straight down and rake the ice enough to break it up. The edge also allows me to overfill the bucket when hauling dirt, pickup large tree trunks/limbs without getting off the tractor. There are a lot more things that I do that with a standard tooth bar I would not be able to do. About the only thing that a standard bar might do better would be starting holes, once the surface is broken, the rezloh works real well.
It may cost a little more than a standard toothbar, but it never needs to be taken off, adds a lot of strenght to the bucket and the extra lenght allows more jobs that can be done with the loader.
Here is a picture of my tooth bar on my old tractor, it was bolted on. When I got my new tractor, I had the tooth bar welded on. Note that it sticks out about 8 to 10 inches from the bucket edge, that little bit really makes the tooth bar more useful than any other toothbar. Also I've had the same toothbar for over 6 years now and it show very little use.