Richard, It seems to be a good feature of your product because in this case there is no extra DRL left during the drive light use.
The problem with morer daytime running lights is that they are not bundled and radiate everywhere. Morer people have attached additional DRL to their older cars and this can get on your nerves at night because they don‘t dimm.
The newer Nolden headlight, generation 2 (not the Defender OEM generation 1) I wanted to choose has extra DRL which has no other lighting function, it is integrated in the housing but separated technically so I have to find out if it is dimmed automatically. Or I switch it via my air conditioner button, just like the additional high beam on the P4SS used to.
I could choose an LED without DRL like Nolden generation 1 or others but during day time I don't want to do without a new DRL, because I always drive with light anyway.