[Harp-L] SEYDEL Blues Session Standard Harmonica

["Hellerman, Steven L." <shellerman@xxxxxxxxxxxxxx>]

I was looking online for a low f# harp and found this for the SEYDEL Blues Session Standard Harmonica: 
 
"This harp is altered by the hole 3 blow note being raised by a whole tone, an attribute that is very useful for Irish and Celtic Music. Bending of this note in the normal tuning would be very laborious for fast jigs, but the rest of the harmonica follows standard Richter tuning."
 
Does this apply to all keys for the Seydel Blues Session harp? 
What does this mean? 
Specifically, is playing this harp different than playing other harps because "the hole 3 blow note [is] raised by a whole tone"?
Finally: Anyone have experience w/ this model, and would anyone recomend it?
 
SLH