Long sleeved fishing shirt or short sleeved wicking t shirt with sun sleeves?

Some hikers do that, like cyclists do, but I only wear loose fitting nylon, long sleeve, button down shirts.

I use sleeves when I’m hiking here in Arizona. They are great for mornings that start cool, but quickly warm up. I start with the sleeves on, then push them down as I warm up – eventually taking them off.
I considered taking a set with me to PSR, but decided against it. I’m glad I did. Other than the day we summited Baldy, I don’t think I would have used them. Most mornings were not that cold and I quickly warmed up.
I did take a long sleeve, button front shirt which I quite enjoyed. I used it as sun protection when we weren’t moving and it was my 1st layer on when it the sun went down. I liked the light weight and the flexibility (buttoned or not) that I had with the shirt.

I used Long sleeved tech t-shirts. Our trek was in the South at the end of July and we had many cool mornings. I would start the day with the sleeves down and end with them pushed up.