Thanks for the input, everyone! And Angie's blog post was a case of perfect timing - although I may not follow her excellent advice on length.
I've decided to keep both light and dark. They were on sale, so not a huge investment, and certainly fun to play around with. I wore the tan ones around the house most of the day yesterday and really enjoyed the swishiness and ease of movement.
(I actually ordered the green, too, but Mr. LTS felt the color was a bit too military, so I didn't even try them on. )
I will tack them up a bit and try wearing them around that way, and will also wash and dry the ones I wore to see if they shrink a bit in length. Despite the no-doubt reasonable advice a number of you offered, I don't think I'd want them any more than an inch shorter.
Note to Sterling: Yep, right there with you: slow to adopt, but loving this style. Not my typical silhouette, either. You're right, in my test run, they did crease quite a bit after sitting, but they're casual pants so it doesn't bother me too much. This style seems so popular right now, maybe you could find them in another brand with a fabric that doesn't wrinkle so much?