This is plasterboard ---
Is there any downside to using 2 sheets of 9.5mm on studwork walls (will be skimmed) vs 1 sheet of 12.5mm?
I have relatively little wall to cover compared to ceilings and it would simplify ordering and storing to work with one type.
And I could overlap all joints in the 1st sheet which seems like a bonus.
Just wondered if there were any major downsides?