Not sure what you are talking about since there are no XPAN to Nikon F adapters since the registration distance on XPAN is about 12mm shorter than Nikon F, hence no adapting them with a Nikon-E adapter, unless you are only shooting macro, and I specifically stated this would be for landscape and products.
(You can get an N/F lens to XPAN mount adapter, but why would you want to put a big clunky and inferior uncoupled 35mm Nikon lens on a 65mm image circle rangefinder body via an adapter? Makes no sense)
Nikon F T/S lenses are large/heavy/expensive/scarce and not able to offer the same image circle or movements, and are overpriced for the optics. Canon EF T/S glass is good, but large, heavy and overpriced as well.
Nikon F lenses, or any other conventional 35mm lens via a T/S adapter are unsuitable due to the fact that they will not cover full frame once any lens movements have been made. They only work for APSC.
A direct E-XPAN T/S adapter is the only way to make it work, and would offer superior performance, size/weight, and value vs. other options.
Why not just adapt the N/F version to your E-mount body ?
That possibility is prolly the reason they don't feel obliged
to build a version direct-fitting to E-mount. Like ... doesn't
EVERY [geeky/techie/advanced] E-mount user already
have a N/F adapter in use already ? Acoarst they do :-)