I'm not sure it's the best idea.
It might be okay in a home room situation as long as the cue receptacle is nicely lined with a soft material that won't harm the cue. I'd still be concerned with it being so low and open all the time though, dirt and dust could get in there and eventually cause scratching.
The big issue though, it's just way to expensive. I can't imagine who is going to spend $200 to hold one cue upright on the floor. At a $50 retail price I think it could have some potential, but not at $200.
I don't think the cue tipping over would be an issue, as long as it's properly weighted it would likely be a pretty stable way to hold a cue.
When it comes down to it though, I think I'd rather have a goo medium height table/ledge with a Q-Claw on it to lean my sticks against.