I've been rocking SSL2-SSL2-59/C for a while and it's sweet - there's no drastic output difference between the singles and the bucker; and tonally, the 59/C has that crisp top end that matches the SSLs nicely. I'm surprised it's not recommended in the article as a complement to vintage singles, actually.
Admittedly, the middle+bridge isn't that quacky but I use neck+middle for that when I want it.