Anyone got a radiator valve and wall room thermostat in the same room?

I have had radiators with TRV fitted and a wall thermostat in the same room, mainly the corridor. I haven't had an issue but when I got some new radiators replaced recently, I was told that I should not have a TRV fitted to the radiator if it is the same room as the wall thermostat.

I have never heard of this before and when I googled this, it seems to state that the engineer is right but it didn't seem to think it was a big issue if you did have both in the same room.

Anyone got both in the same room and can comment on whether you have had any issue?