Also, the "sun, moist soil" instructions worry me a bit.
Is there such a place?
Not in my gardens, unless I water all the time, especially this year.

I know it's not been long, but I was wondering how yours is coming along
and if anyone else around here grows it.

I tried some Stonecrop (sp.) over a stone wall, it's dead, I think
and some S. Dragonsblood in another place that's doing ok.
So far, the only low groundcover I've done well with is Ajuga,
but I don't know any for sunny areas. Any ideas?

I have a hill in my yard that's subject to blistering summer heat and frigid winter cold. The "soil" is mostly rocks sitting in dust. It's too steep to mow and over the years I have planted it with groundcovers.

Dragon's Blood sedum and other varieties of sedums did well but are shallow rooted and easily torn up by the dog's feet as she chases squirrels. There's also the weed issue till it gets tightly established.

Tried pachysandra but it just fried to a crisp. Blue rug juniper also has done poorly (planted nearly 20 years ago and still under 2 feet of spread). The ajuga I tried turned an enemic gray/brown and was eventually taken over by weeds.

What's done best for me in this area is periwinkle. Would it be low enough for the area you have in mind?

I got six pots of Jenny, I hope I'll get them in this weekend
(it's supposed to be ghastly) in several places, to see where it does best.
There are supposedly Ajuga cultivars now that tolerate sun,
I might try some of that too. I really like Ajuga. In my yard, once established,
it hogs all the light and really COVERS the ground. No idea how well
it would play with others in a bed though.

I also got some creeping Phlox on sale to try out.

Vinca always grows kinda sparse for me, no match for those hideous
wild Artemisias (Mugwort, I think), they're my bane here.

Here's a pic of the Spurge:

Also trying: White flowered Campanula Carpatica
(fighting it out with red and purple Bee balm),
Creeping Speedwell and Creeping Phlox, variegated Ajuga and also the bronzy one.

All of these were on sale at my little local garden place for 1.75 a pot.
Next year I'll know if this was a bad idea ;)

I always do the opposite, sometimes with unsatisfactory results. Your way will prevent inappropriate pairings. Right now I'm trying to get white lamium "Nancy" to establish in my larger hosta beds. I've got my fingers crossed that it ends up to be a good idea.

I have a poor little Lamium down by the pond, cowering near a Petasites Giganteus,
that's just starting to feel frisky and surveying the real estate.
A volunteer creeping Charlie is already almost covering it too.
Hostas are probably be better company for it, yours should do well.

I also planted one of those horribly expensive Hakonechloa grasses,
which promptly died and was replaced free by the nursery.
I'm planning to give those another good try.

My six plants are now slowly spreading, it's been a dry spring.
Weeding in and around them is, as expected, pretty bad.
My variegated Ajuga died immediately, no idea why, the purple variety is digging in fine.

My Petasites has staked out a 5x5' area, I don't think I'll be weeding there any more.
The Hakonechloa replacement is alive and seemingly well.

I've discovered Trifolium repens 'Dark dancer' and have high hopes for it.
The deer are grazing it (haven't had time to spray) but I can tell it's a tough plant.
It's very beautiful, the label said "spreads", and I hope it does.
I'm still looking for other interesting ground covers.