If native FTTP is available, you just need to order it by calling 0800 587 4787. Prices will be the same as FTTC for the lower speeds.
There's your answer then I'm afraid. You could always give the FTTP team a call to be 100% certain.
I have a Sky phone line, so that checker doesn't work for me. Using my address it says 'FTTP is not available' immediately under the main box.
This is an issue you should really be asking Sky, as this is a BT Retail forum, and has nothing to do with Openreach.
If you want to ask about fibre, You can ask Openreach directly HERE.
Availability of FTTP is totally independant of whether you are an EO line or not, it is a completely different method of delivery to FTTC.
As I said previously, worth giving the FTTP team a call.
I do not think Sky market the FTTP product anyway, there are only a handful of providers.
The Openreach form should work, as its just a basic form.