I've only owned the awning for 5 years, but I've finally got around at fitting the awning rail to the HiCube and setting it all up.
The awning is a Westfield Quest Rollout, in that the roof and front panel roll up into the bag and stay on the awning rail. I picked it not for that particular feature, but because it's 3m long, which means the ends sit very nicely over the B-pillar at the front, and over the filler panel between the two rear windows.
So, not a massive awning, but enough room for an extra bedroom or bicycle storage, or even carbooting.
It won't be staying in its bag, it's designed for caravan and needs more awning rail to secure it for travelling, but there's more than enough room inside the HiCube to strap it up opposite the cupboards.