I soaped with my Crafters Choice Peony FO last night (better late than never right?). I had a lovely ITP swirl going until I realized I'd actually forgotten to add the FO. So it was added at a medium trace and blended just until it was mixed in. I didn't have any acceleration once it got added, and all in all very nice to work with.
As I mentioned, I had my doubts OOB, there was something a bit chemically and not quite right in my nose, but as of tonight when I unmolded, all my concerns have proven to be for naught. It is much truer to real peony fragrance in the soap, and while it is delicate, it is still very obviously there and quite lovely. I would certainly recommend it.
Now we'll just have to see how well the fragrance stays through the cure.