It certainly does no harm. In the UK switched outlets are a de-facto standard, but unswitched are still permitted.
This is one difference between BS7671 which is proscriptive (you need to achieve this) and AS3000 which is prescriptive (you must do this).
There's a lot more freedom in the system design in the UK.
Either way works just fine.
For the record, I would use AS3000 here if you need an English standard, it blows the Thai requirements out of the water.