I have some planted with Austrian Field Peas for this spring's harvest as we talk. Planted back in October but was late in germinating due to our drought. Mine is Jumbo Rye and comes from.....you guessed it, Oregon. Right now, it and the peas are at about 4".
The Jumbo is able to grow larger with late maturing which helps me to beat the weather....aka not head out too soon and give things time to dry out somewhat (being Spring) so that I can get it cut while in the prime, besides yielded more mass per acre. Peas are in there for 3 reasons: Soil enhancement, reduction of fertilizer costs as I get N nodules on the roots (and don't have to inoculate) and up the protein and TDN in the rye hay.
As soon as this comes off and the clay soil permits, I'll go back with some Milo this year. I like to plant SS because of yield and cows affinity but the Sugar Cane Aphids like it too and I only get one cutting. Last year, when they hit me and others in the area, I noticed a neighbor with Milo that had none........Hmmmm.
So this year I will try it and see if I can get a second cutting as it is very drought tolerant and apparently not on the aphids menu of delicacies. I know the cows will like it as I fed some this past fall and they loved it. Plan is to plant it at 50-60#/acre, drilled 7" rows to keep the stem size down. We'll see how it goes.