I grew "naked" oats this past year and loved them. IM in zone 6 and I planted them in March I believe, and harvested by July. Processing was fairly simple since they tend to just fall out of the husk when they are at the right moisture level. I dont know about crossing with other varieties either.
On a side note, I was happy with what I did because I took my first cutting in the summer and got grain, and I found if I cut it right it would grow back. Also, some of the grain fell to the ground and new growth happened for a second cutting which I used for
straw for my beds.