I recently ordered a Leki Wanderfreund. A newer, upgraded model of what I used for years. It is a cane style T-grip trekking pole. I thought I was ordering a pair, since the photo on the website showed two poles, but it turns out that only ordered one. I was hoping to use them on my Friday (yesterday) hike to Forrest Lakes, from the Moffat Tunnel. Then I started thinking, why not use just one trekking pole. It's basically a cane and I don't see elderly people with two canes. One of my big complaints about trekking poles is they tie up my hands so I can't do simple things, like put on Chapstick or eat a Kind bar, without tucking both poles under an arm. While I'm doing this, I'm not able to use either pole. With a single pole, I can do simple things with my free hand and still have one pole in use.
So, I went for my hike with a single pole. Overall, I'd call it a success. There were times I wish I had two poles and times I wish I didn't have any, but overall, it was a good compromise.
The other thing I don't like about trekking poles is the metallic click, click, click sound invading my peaceful commune with nature. The Wanderfreund has carbide tips, but it comes with a good rubber trekking tip over it. It worked pretty well and was much quieter. At least for now, I plan on keeping the rubber tip on.