Update!
I finally got the 1.12" torsion bars installed in my car. I don't have much drive time yet as I have some brake issues (ok, big brake issues), but so far they seem great. It's definitely a firm ride, but not harsh. It still rides softer than my SRT-4 did with upgraded aftermarket coilovers, and than either of the lifted trucks ('02 dakota, '71 ford) that I've had the pleasure of driving.
I definitely like a firmer ride, but in my opinion they're completely streetable. I still think the car will need a sway bar up front, and at this point I'd still consider the larger 1.18" bars that FFI sells. The torsion bar adjusters are interesting though. I know its still settling in, but right now the car is about stock height with the torsion bar adjusters set just so that there is tension. By that I mean that there's only one turn on the adjusters after the adjusters were set in the LCA's. I still think it will sag a little more as it settles in, but larger bars might be interesting when it comes to height adjustment. On the other hand, I'm only running a 318, so that comes into play as well.
I'll get more info up as I get to drive the car more.