As in the US, it's still quite difficult to get hold of in the UK if you're not in London.
I was able to buy an EdP at a UK airport just after Christmas.
Although I bought it blind, my previous experience of testing EdP vs EdT of the same fragrance is that I have always preferred the EdP. La Nuit is no different in this respect. My previous bottle of La Nuit had almost run out so I was going to replace it anyway, the only choice being Edt or EdP.
To my untrained nose - The EdP is less 'shouty' - less initial projection/ silage. The vanilla has been 'turned down' a bit, it lasts longer (as you would expect) and sticks closer to the skin. Overall, it has a more 'Gentleman/ mature' feel to it. I've just re-read all reviews of the EdT, and I think the EdP addresses most of the criticisms expressed there.
Summary. I'm 50, I prefer the EdP. Younger 'noters wanting 'romantic wear' may find the EdT more suitable.