Illia

Yep, as the first post linked has mentioned through the posts, the main issue is that most banana varieties take a minimum 5 months to fruit and mature properly. So, even if you do overwinter by removing the banana, chances are an Ice Cream (if it is the real deal) would only give you fruit if it flowered first thing in the spring, and if your climate had a long enough growing season with enough heat in the summer. I know that isn't that case for me up here, haha! So, I overwinter my shorter ripeners but the more slow growers I keep in greenhouses or indoors during winter months.

If you keep an Ice Cream (or Namwah) outside in zone 6 it will die, even the root/corm will die. If you protect it well, it will be a little like keeping it indoors somewhere cool to overwinter. It may live (but in your zone, more likely die back to the corm and regrow a new banana the next year) but there's still the flower to fruit timing issue.

So, it's possible, yes, but there's some complications and special care that goes into it. My advice is either having a greenhouse, growing it and appreciating the foliage if you don't get fruit in time, and/or getting a different variety. Dwarf varieties are easier to work with when it comes to moving indoors or growing in a greenhouse, and some of the shorter ripening time varieties you'd have better luck with in any scenario, be it overwintering or growing throughout the winter. But, some of the short ripeners like the famous Veinte Cohol are not cold hardy, so keep 'em safe during the winter.