Hey, sorry for the late reply. I'm afraid there's no saya for the deba. It just has a little soft plastic edge guard.
Plenty of good choices from forum venders, including a 400/1200 combo stone from Dave Martell pretty cheap. I used to use Norton oil stones for this kind
I was kind of looking at those boards too. But since they are made of a soft wood, seems like the board would scratch/stain and pick up the smell of whatever
very cool board...but $35 shipping to USA. Ouch.