Stylish opener for England run out in an unusual manner before delivery (2,5)

I believe the answer is:

in utero

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'before delivery' is the definition.
I can't judge whether this defines the answer.

'stylish opener for england run out in an unusual manner' is the wordplay.
'stylish' becomes 'in'.
'opener for' suggests taking the first letters.
'in an unusual manner' indicates an anagram.
The initial letters of 'england run' is 'er'.
'er'+'out'='erout'
'erout' with letters rearranged gives 'utero'.
'in'+'utero'='IN UTERO'

Can you help me to learn more?

(Other definitions for in utero that I've seen before include "Pre-natal position (Latin)" , "being developed" , "Before birth - routine (anag)" , "Where the foetus is" , "awaiting delivery" .)

I've seen this clue in The Hindu.

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