I would be looking for speaker stands like this that keep the QS open to the bottom as you stated. Unfortunately many stands are not rated for the weight of the QS8s. I also found another set that has a good picture of the adjustable 'L' bracket. Goodluck.

Jason
M80 v2
VP160 v3
QS8 v2
PB13 Ultra
Denon 3808
Samsung 85" Q70