Thanks, all. I'm leaning toward keeping. I agree that they are best with the black pointy booties. I like them with the sandals too but don't think I'll be able to do that until next spring!
Una, I know what you mean about the ties being obtrusive. These don't seem so bad though. They're short enough that they mostly stay out of sight with a shirt of this length, and I'm unlikely to ever tuck into these.
IK, I am willing to forgo a certain amount of figure flattery because these are silk. I do get what you are saying about the material. I think it's the nature of silk to be a bit more "revealing", although if these came in a thicker silk (like the peach skin type) I would totally jump on that (it would be better for colder weather too). I do not want a jersey material, or anything poly for various tactile reasons. I will keep an eye out for the Lululemon style too, although I think my butt is in general too big for lulu. =P
Rabbit, I agree that they'd be better with the non-boot shoes pushed up a bit. I'll try that when I get home. Because the cuffs are elastic they should stay up OK. I am not actually 100% sure that is a panty line in the last photo - it could be but it's only on one side. Anyway, it's not nearly so pronounced IRL, and I have seamless underwear I could wear too.
Una + Sveta, I will try with some higher, more fitted boots when I get home too. Maybe my midcalf lace up boots. I agree with you, Sveta, that the moto boots don't work and just make me look like I'm wearing rubber galoshes.