Here is an update.
Columnar trees in my backyard: The "Tangy Green" apples above dropped in mid October. I only got a couple, the rest disappeared. The "Northpole" held until end of October. These are both in quotes because these trees appear to be mislabeled as the apples were the wrong color. I have about 15 apple seeds in the fridge stratifying. I have them labeled but I'm wondering whether I really want to track that. I may mix seeds in the future and reduce the amount of record keeping and tracking I need to do.
Seedlings from columnar apples: I planted out 29 mid-summer in the back yard. Some put on growth and some others are still quite small, under 6" tall. I culled 4 in October that showed quite a bit of leaf scab and did not look columnar. I'll watch them next summer and throw out more that appear either not columnar or disease prone.
Potted dwarf trees: Lastly, I took advantage of the mild November and transplanted some trees. I had a some potted dwarf trees on G.11 and M.27 that I had planned to use for pollinating my columnar trees. Having learned to hand-pollinate, I moved them to the farm and created a dwarf shotplot like shown in my original posts. I put them on 2-3' centers, crowned slightly, lumite ground cloth, and welded wire fenced around it that is 6-8" off the ground. After 2 summers in 5 gal rootmakers pots, the G.11 were a little rootbound but not the M.27. M.27 might be too dwarf to work but I have no other use for them. If they don't thrive, they'll get replaced with some G.41 trees from my nursery.
Bare root trees: With weather still nice and the ground workable, I dug up and transplanted some trees last weekend. Some of these were larger P18 and B118 rootstock that went into my regular orchard. Two on P18 were very nice size after bud grafting in August 2015 and growing in my nursery over the summer. They easily were as nice as some of the grafted stock I bought from Cummins. One tree was a P18 that I field grafted last spring with a cleft graft. It had not grown much and while futzing around to get the ground cloth down, I busted the graft off. So that P18 sits in the orchard waiting to be grafted again. Having some holes in the columnar shotplot, I transplanted some 2016 benchgrafts from my nursery and one 2015 bud graft. The bud graft was about 30" tall and robust. I have a 2nd columnar shot plot started next to the 1st. Tposts are in, added some dirt to crown it, and ground cloth. I did not have enough fencing to enclose it or I would have started moving more of last year's bud grafts into it now. I'll let that wait for spring but will start prepping another location for some more of these shot plots. There are some nearby black walnuts that I want to get cut down and stumps treated with gly.