Shun's are A-OK, they always have been.
The only reason I shy away from a full blown recommendation is on the issue of bang for the buck. That does not take away from how exquisite the knives truly are, edge retention, looks and the shape of the belly on them are amazing.
As to your info about who would use them...the cookies at LA's Best Seafood House Providence (imho) use them daily, I know a sous chef at Water Grill that loves his as well.
Personal preference is a great thing here at Bladeforums, I like Messermeister San Moritz in a 10" blade, a Forschner in a 12" and finally a 250 mm Tojiro Gyuto for those days when a fat Rockwell score means something in the kitchen, ie razor thin cuts.
Splitting microns or whatever it is that you were going on about is tantamount to farting in a truck when you are the only one in it, then bragging about it to your wife.
To the OP, if your dad likes it and it feels good in the hand get it, Kershaw is a great company, backed some of the finest minds in the business.