Sugar palm, other useful palms? cool climate palms?

Last week I was listening to the podcast in which Paul interviews Willie Smits. I think it's the podcast that has made me more emotional and that I've found more inspirational. He is a hero. It got me thinking wether I could grow a sugar palm in my property (2300 meters above sea level, cool tropical climate). One of the aspects that I found more interesting was the mention that the sugar palm draws nutrients from the subsoil much like comfrey does: a large tropical plant that produces sugar, fruits, high quality timber, fibers, increases fertility and more!; I think comfrey has found a match as the queen of permaculture. Anyway, I have found a nursery that produces sugar palms here in Colombia and am waiting to hear from them about shipping costs. This is one of those occasions in which you learn about a plant and then you just have to have it in your system, even if I am located at a much higher altitude than the plant's original habitat.

Who has experience with other useful palms for high altitudes/cooler climates?

The nursery has also recommended Butia Capitata, aka jelly palm or pindo palm which produces edible fruits that can be eaten fresh when ripe or used to make jelly without adding pectin. It is native to southern South America (Argentina, Uruguay, Paraguay) and is cold hardy.