Interesting idea. I saw something similar once. A man bent and staked down a sapling then pruned off all the underside branches. In a few years it had grown with six branches coming straight up from the main. All he had to do was cut the branches off and make some knob sticks!
I'm pretty sure in a few years you'll have the makings of a thumb stick. Consider sealing the pruned end so bugs and mold don't get in. I've only done a little pruning, but you might also want to lop the ends of the new growth at the end of each growing season, leaving just a few new buds, so the 2 new branches get thicker, instead of growing long and spindly.
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