I ordered from Fotoimpex a couple of weeks ago as Analogue Wonderland here in the UK were out of stock. A little on the expensive side but I have my four rolls of P30 and sometimes the right weather conditions to use them.
When I shot the Alpha product I shot one at 50ASA and one at 80ASA, processing both in ID-11 I got decent results but better at 50ASA. I am aware ID-11 is not the best developer for this film. Most commercial labs don't use D96 which is the recommended developer. Hopefully Film Ferrania will be able to update their list of recommended labs soon, though the worldwide situation is changing daily in terms of who's open, who's closed due to government restrictions, who's hoping to open soon and who's closed their doors forever.
Regarding Kickstarter rewards, Nicola posted a series of videos at the end of 2019 answering some of the specific questions that people post.