Mixing rabies pre exposure vaccines and on a different schedule

[mixingvaccines]

I received the first rabies pre exposure vaccine (Verorab) yesterday in Japan on day 0 but I am leaving to go to another part of Japan in afew days. I was told here that I needed to do another vaccination on day 7 and then day 28 to complete the immunisation.

I contacted a clinic in the other part of Japan and they said I only needed the day 28 vaccination and then another vaccination 6 months later to complete the immunisation. So I have some questions:

Is mixing types of pre exposure vaccines going to reduce their efficacy?
Is the day 0, day 28 and day 180 schedule also effective immunisation?