Thanks for posting the link, Ken.

Here's a quote:
"Use of adjustable sticks as a hiking aid, especially for downhill walking, is
advantageous and recommended in the following situations:
•   advanced age, excess body weight
"

And I qualify in at least one of those categories. frown

Interesting disadvantage:
"Decreased sense of balance: Long-term use of sticks may reduce balance
and coordinative ability of the subject.
"