As a real example of non-standard R/T, and how extremely opposite of professional R/T conduct...
I was listening to approach in OMDB 2 weeks ago with an English sounding lady manning Tower frequency on a Friday morning at about 10am... She was not very busy and was professionally coordinating traffic as normal.
The R/T went something like this (excuse my poor memory):
TWR: xxx 897 - Wind 010 degrees at 8 knots. Continue approach 30L expect to exit left at Kilo 8.
xxx897: xxx 897 - Okey dokey...
About 3 mins later...
Twr: xxx897 - Cleared to land runway 30L. Wind 010 degrees at 4 knots. Expedite exit left at Kilo 8, traffic on short finals behind...
xxx897: xxx897 - Okey dokey...
I sat there with my mouth open.... Twice the same response! Now I know OMDB was not busy at that time of the morning but surely the pilot/co-pilot could have done a professional callback regardless of light traffic conditions..?