I don't personally get the Terre d' Hermes similarity. TdH has more citrus - primarily grapefruit - and an awesome flint note. Or at least it used to.
Windsor has more pepper only and smells a bit like TdH in the base notes that come out after a couple of hours.
I mainly get a sweet, herbal scent from it. Good thing because I generally don't like the pepper note.
I don't like the pepper either - way too much of it in Windsor, but the vetiver in there is quite nice and subtle.
It's the vetiver in the base notes that makes it smell a bit like TdH. Otherwise, I think they are two entirely different scents. I don't get much, if any, pepper from the TdH parfum.
Royall Rugby