Well, pulled the trigger and bought the 120cm Black Diamond Distance Z trekking poles.
Didn't think the $50-60 extra for the 3 oz lighter Carbon version was worth it.
Still a little worried about the non-adjustability (but not enough to pay for the FLZ versions

), but the 120cm seems to be the right size for me. A bit higher than my normal hiking stick, but Time will tell.
Promptly took them out for Stinson Beach to Mt Tam east peak trek on Saturday.
Not really sure if they helped minimize my fatigue, since I was still very sore and tired after the 18 mile trek.

They did seem to help on climbing and descending.
Did occasionally find that the 2nd one got in the way when I stopped to take a picture, but wasn't as awkward as I thought it would be.
Might be better once I attach my camera mount screw on one of them so I can use it as a monopod. That should alleviate the need to shift one to my left hand as I take pictures.
We'll see if my next accent of Diablo will be easier with them.