They are potted- 3 gal pots, I think. I have some pics in a vendor comparison thread.
What was the caliper (of the variety, not the rootstock) of the OGW trees? Mine were 3/16", one of the smallest trees from anywhere.
Also, I thought that Winter Delight was a late season jujube, but OGW has the following (bold added by me):
A popular variety in Northern China, Winter Delight is a very cold hardy and compact tree that produces large, egg-shaped fruits that are crisp and sweet. Winter Delight is one of the earliest jujube fruits to ripen and is delightful in winter with its elegant branches and stunning aura.