They are crazy expensive! I'd like to try them but I'm one of those guys that has a problem with buying 'made to look old' stuff.
Guys who age their guitars and do it well are pure genius.... but personally I'd never buy a new guitar and age it any other way than the natural way.
To me its like buying jeans that already have holes in em! Crazy talk!
The sh55 is one of my favorite Duncan humbuckers though... so if its anything like that I'm sure they sound stellar!