Absolutely - I have a pair of LX521, which I am about to upgrade to LX521.4 . His speaker designs are absolutely awesome. They simply disappear acoustically.
The LX-mini is much more forgiving of room layout, since it is a monopole and not a dipole. Someone I know has the LX-mini, and came across and we did a shoot out between them and the LX521. The only significant difference was the relative lack of bass on the -mini, which is overcome when paired with the subs. They also sounded more "forward" as compared with the LX521. But still pulled off the disappearing trick. And they are a whole lot cheaper to build than the LX521 by a very long margin.
Nelson Pass has done a discrete FET analog crossover for the -mini (see SL's site), circuit boards for this are apparently going to be made available on diyAudio.
SL is apparently very happy to let people come over and listen - and since you are local, why not get in touch with him?
LX521's in my listening room