I have the FA35/2 (which is close to the DA35/2.4, if not the same lens w/ FF coverage) and the FA31ltd.
The FA35/2 is a very competent and versatile lens.
Close focus, sharp from wide open and stopped down.
It was my most used lens on apsc before the K1.
On APSC
Its a 50mm equivalent FOV and working distance on apsc, which is really versatile for portraits, streets, etc.
One downside is that it has more hexagonal oof highlights when stopped down from f2.8 to f4.
On FF
However, I do think that if you are looking that gives that bit more, its the FA31ltd. (esp on FF)
Its just that bit wider as a landscape lens.
Also wider to be nearer a 28mm to be a sort of environmental portrait lens.
The subject separation is also a bit more distinct.
Personally though, I think that if you use apsc, the FA31ltd is a bit of a waste (as its not cheap), its not fully utilizing that FOV that makes it special.
I tended to use the FA35 more on apsc, but with K1, I seldom use my FA35/2 anymore.