Dutch White Clover has worked really well for me in not so ideal conditions of heavy clay. It's very easy to direct sow in fall and spring. I prefer walking on clover over grass but that is just me. Dutch White Clover also fixes nitrogen and is a perennial ground cover so you really only need to seed it every few years if at all. I like to sprinkle in low growing wildflower mixes to add some additional diversity. I am going to try Sheep Fescue grass to add a grass into the mix next year.
Looks like a great tool. I'm really interested in the idea of using only hand tools like rice knifes, scythes, and this tool for all field/garden maintenance. Biggest thing that interests me is no petroleum and loud machines.