My wife and I have long been sleeping bag advocates given our initial focus on hiking, though in recent years we've moved to truck/car camping and have a rooftop tent. Slowly, we'd been adding some other blankets to our bags to augment (that popular brand that starts with an R), but as down devotees in all of out outdoor gear (jackets, sleeping bags), the R synthetic blankets are okay.
Given that we use a rooftop tent (GFC Superlite), the idea of having a non-constricted night's sleep is highly appealing, coupled with the desire for a down blanket. Along comes the Hoverquilt, which at its comparatively massive width covers the both of us and the span of the tent with plenty to spare to tuck in around the sides and ends.
We've spent five nights straight at elevation in May testing it out, and as the nights progressed (with overnight lows ranging from upper 30s to low 40s), we ended up jettisoning layers. The first night was mid-30s and we still had our sleeping bags with the Hoverquilt on top, but by the third night, I was down to briefs only, no bag, one of the R synthetic blankets and the Hoverquilt atop, and I was perfectly comfortable! We had similar temps in January in Arizona at elevation and this combo wouldn't fly.
As we all know, too much constriction doesn't allow for air flow or warm air to get trapped, so having loose blankets kept me warmer than expected, which was a great revelation.
One of the biggest aspects was not having to sleep constricted in a bag anymore! It really gives you that at-home feel, and having a huge blanket that covers you and your partner (and a small dog) in a rooftop tent is a huge boon.