the canadians like them a lot

i now have some for the spl vehicle, but when they were setup in a friends lancer, they were pretty good to be honest.
Mid is a bitch to install, x-over is also large as well. Tweeter is a neo soft dome and comes in a aluminium casing with a couple of diff mounting options. Set comes with 10ga cabling as well.
Sound wise: the set is made for loud. Overall tonality is reasonably clear (better than some alpine typeR, dls b6a, soundstream setups i've heard over the years) but the midbass is extended and the midrange loses it a bit due to the extended midbass.
Its not harsh, clinical, or overly precise in its reproduction, but it is a set that is non fatiguing and is easy to listen and does it without losing a lot of detail except at the top end (but that is representative of a wide range of component sets that get wooley at 17k and above..)
Overall, a nice set to have to get loud and clear and no inherant musical signatures cept for the extended midbass. Pretty neutral i felt.
Its easy to dismiss fusion, but to be honest, this is a signature/top of the line range. They are built to be loud but also clear with a solid build to take a lot of crap.
they aren't built for audiophiles.. they are built to get loud, sound good and provide enjoyment without being too overly anal about music.
they are in a simple sentence, fun and enjoyable to listen to.
as for impedence.. considering that impedence changes with frequency and that numerous amplifiers are 2 ohm stable, there are no problems with the lomu's being 2ohm.
My friend cranked his music hard using a caliber 475+ and the amp didn't overheat (didn't even get warm lol) so they are perfectly fine to run.
Infinity have released "2ohm " component set and there are no major issues..