Dean made me a Razzle last year. I contacted him via email, and he replied a few days later. I sent him a deposit, and wired him the balance when the camera was ready. It took him a while to build the camera, but I didn't rush him. The camera works 'as advertised'. I've never used a Litmann. Razzle's take standard holders, which lock under Dean's designed pressure back (think Graflock). He also provided an insert which offers a ground glass-- I did not use this, as the project is 100% hand held.
Project is now complete, and the Razzle was well worth it. I'll probably sell it here shortly.