Debtor died in vital strategy to impress in business (5,8)

I believe the answer is:
power dressing
'strategy to impress in business' is the definition.
I can't tell whether this definition defines the answer.
'debtor died in vital' is the wordplay.
'debtor' becomes 'ower' (I've seen this in another clue).
'died' becomes 'd' (abbreviation next to the year of someone's death).
'in' is an insertion indicator.
'vital' becomes 'pressing' (both can mean urgent).
'ower'+'d'='owerd'
'owerd' put inside 'pressing' is 'POWER-DRESSING'.
Can you help me to learn more?
(Other definitions for power dressing that I've seen before include "(Of women) donning clothes to look authoritative" , "Wearing of clothes designed to give an impression of authority" , "Wearing of severely tailored suits by some women executives" , "Style perhaps adopted by women executives" , "what some businesswomen adopt" .)
