There are a mass of different leathers out there and all have their own problems. One should never presume, so I guess the only way to identify the leather is for someone to go and have a look.
There are expensive pigmented, micro pigmented and of course aniline dyed too, and all with different finishes, textures, wear rates etc etc. Obviously anilines cannot be sprayed as a rule of thumb.
Kev
p.s. I have a custy that I have to phone tomorrow for a visit at some stage, and she is in Royston - not that far from Cambridge. If you want I could pop in and advise at the same time?