I'd be interested in any opinions & reviews on these, too. There's very little to go on. The thing I find most interesting is that because of the unusual design, it's been said that there is no drop in level when they're split. This is unheard-of and would be a huge plus- if they sound good to begin with.
Gotta hand it to Don Lace; he's come up with some really unorthodox ideas and made them work pretty well. It's mostly been in the area of the sensor singlecoils, but I'm very curious about his humbuckers. Found a glowing review of the Deathbucker (which caught my interest about the full volume when split) but that's way too hot for me. I prefer vintage or medium output pickups, so I don't need to tweak my rig when I switch guitars.
Have seen reviews from folks who didn't like the Alumitone series very much at all. Still, with a radically different design it's hard to tell whether it's actually poor sounding, or if perhaps it's just so unfamiliar that people don't know how to get the best out of it yet. I'd like to give these the benefit of the doubt until I have more information. But there's so little being written on the subject...
So if anyone's using these or tried them out, by all means please let us all know how you feel about 'em!