I like 'short-sleeved' blazer coats - I believe I am one of the very few entertainers in Singapore to wear them - got the inspiration from an American magician who had to 'roll up his sleeves' all the time to show that they are not hiding any cards/devices/rabbits (!) inside the sleeves.
Well, he got fed up with sleeves and decided to cut them off.
I like the vest and shirt combination too - I started 8 years ago with that! I still have my very first vest as a memento!