FYI, I just received this email response from Ernie Ball:
Not sure wrapping 12” of silk around my peg is going to work out, “slippage” or not.
You can use the entire length. To prevent slippage, flatwounds need a more secure winding due to the silk wrap.
Not sure wrapping 12” of silk around my peg is going to work out, “slippage” or not.