Yup - they already work great with a number of shirts I have.
Very quick to sew.
I used 3" wide elastic for the waistband
Sewed onto the waist area with two lines of stitching- not run through a channel
No pockets - Saves sewing time, improves fit, decreases issues involved in setting the pockets neatly into the side seams
Why else do I not sew pockets? When I used to sew pants pockets they would develop holes in the bottom (because I put heavy things in them) - I used to lose my keys (- cell phone - money).
I used to do all kinds of reinforcing with heavier material - but then I just kept putting the heavy stuff in and losing it.
I still like sewing pockets in shirts.
These pants fit nicely - because I made them to fit me and work on my figure. That is the pleasure of sewing my own.
They are some kind of black twill material. Yup I found it in my fabric inventory.