I used to have an SE Soapbar, and what a great guitar! Wish I hadn't sold it now. :(
Sound-wise it's quite modern and bright, that could be down to the pickups or the strings (stainless as standard), more than likely, both. If I had kept it longer (needed a clear out of gear - no room and GAS had struck again!), it would most certainly have got a set of BKP-90's thrown in there.
Play-ability wise, it felt like an SG. Small & light, with the PRS "wide/fat" neck profile. It certainly filled the palm, but felt great too. Really playable. Build quality was fantastic.
I know that if I were on the lookout for a single coil loaded guitar, I'd have another, no question about it at all, although I certainly would put some "normal" nickel wound strings on, and put a set of BKP's in. :D