Anyone using Nearfield Acoustics Pipedreams in home theater?

I'm interested in talking to anyone using Pipedream speakers in a surround, home theater set up. I have a pair of Reference 18's with a Thiel MCS1 center and it's not a bad match. But before I invest in 4 others (7.1 configuration), I was hoping to find anyone with previous experience. Yes, the obvious solution is to purchase more of the Pipedreams, but cost is a consideration.