Emphis should be 1-2 buds BELOW the surface. # above not important.... Only potential problem will be a fungus forming on surface of soil But if the soil is steril or some ventalation then no problem.... go for it!

yiorges
I had one cutting which was 10" long with 2 nodes but both nodes were 3" apart on the basal end. I buried the basal end and both nodes. Will shoot appear above the surface of rooting mix after rooting.

Old textbooks, I'm talking 1960s, said store woody cuttings upside down. Folklore has it that this is the way grape cuttings were transported from Europe on sailing ships way back when.

Actually storing upside down has another reason behind it. This technique is basically applicable to places with reasonably mild winter temperatures where the ground may not freeze solid like here in zone5 but the ground gets some warmth during the day from sunshine. The cuttings are buried in bundles upside down (with the basal end up i.e. the end that will be eventually down when planted) then covered with some thickness of soil. The top layers of the soil receive sunshine warmth during the winter and early spring period which causes the basal end to calluse over time during the winter. When the weather warms up later and it is time to plant, the callused cuttings are dug up and planted in their proper place with basal end down. This callusing helps expedite rooting. The upside down storing is simply to keep the basal end near the relatively warm top part of the soil.

If you have the room and can find one, pick up one of those cheap refridgerators that still work. You won't believe what all you will end up using it for.
I had one where I used to live and had all sorts of plant pieces,seeds in it.
Oh, it's good for a six pack or two.....of pepsi.

yiorges
You wrote "Emphis should be 1-2 buds BELOW the surface. # above not important.... Only potential problem will be a fungus forming on surface of soil But if the soil is steril or some ventalation then no problem.... go for it!"

Now, I had received a cutting which was 10" long with only 2 nodes but both nodes were 3" apart at the basal end. I buried the basal end and both nodes. Will shoot appear above the rooting mix from one of the buruied nodes after rooting/shooting.

A pile of raw sawdust works great. In the winter it is pretty inert and allows air circulation as well as keeping the wood from drying out.
A Refrigerator can dry out the wood, and can promote rot, due to cool temp fungus problems. Also, if you try to store cuttings with produce, the ethylene gas released will not be good for the grape wood.
Here in the PNW, outdoor temps are about perfect for leaving the cuttings in the ground, but we don't get subzero weather here.
Peat moss has a natural anti fungal char. and would be a good media to store cuttings in as well, if you loosen it up and get it 'slightly' damp first.
Would like to hear more about your grapes.

Damp newspaper works good if there is no sawdust handy.
It is readily available too, and doesn't matter if it is out of date.