I'm in a tiny apt. in Chicago and they'd take up about half of my living room.
In that case I would urge you to consider single driver speakers. The Abbys project a fairly large, life size image that extends forwards. It is much easier to achieve reasonable imaging with single drivers. You won't be able to extract the full potential of a larger horn speaker. If you still want front loaded horns the smaller Heresys would be worth a consideration and an affordable introduction to low-power hi-efficiency amps/speakers.