Very interesting tuning! I am harmonica rookie but once I will buy this type of harmonica.
Holes one to five are exactly the same as standard tuning.
Holes six, seven and eight are the same as holes two, three and four (just an octave higher).
Hole nine is the same as hole two (two octaves higher) and the reeds in hole ten are reversed (so that what was a blow bend is now a draw bend).
This makes fast minor pentatonic/blues scale runs much easier and means you no longer need to overblow/overdraw to get the flat third and flat five in the upper octave as they are now available as simple draw bends.