I inherited a large patch of it when I moved into my present house.
I love it.
The biggest area is in almost full shade and it is blooming now. Later , the foliage will turn red.
I also have an area in full sun which does well too.
Seems it doesn't care where it's planted.
I don't find it invasive, but I'm in Zone 5 at altitude.

I have Ceratostigma plumbaginoides in full sun. I would not call it invasive but it isn't a nice little patch either. It does come up from rhizomes sometimes in the middle of other plants or otherwise not where I want it. The color is very nice both flowers and foliage. There is one with yellow foliage too 'My Love'.

Ceratostigma griffithii is more a sub shrub than ground cover. Like Caryopteris.

I tried twice but couldn't get it established. I'm guessing it needs better drainage than what I have.

The gold-leaved 'My Love' is a variety of C. willmottianum which is only hardy to zone 7, whereas C. plumbaginoides is hardy to zone 5.

Yes, I love it (and I'm not the biggest fan of groundcovers). I like the foliage (gets a gentle reddish tinge in cooler temps), and I find it tends to meander nicely once established. Easily yanked up where not wanted, though. And those ELECTRIC BLUE flowers - !!!

Forgot to mention - all of mine are in part-sun and do very well.

It takes both full sun and considerable shade here in zone 6. Will not establish with fall planting, however.