Thanks, got Moderna for the second shot - lots of Pfizer/Moderna mixing going on where I live but apparently since they are so similar it makes no difference; at least that's what the gov't is telling us.
Update: Just saw on the news that Canada has surpassed the US in double-vaccinated people today.
It bugs me that the authorities who say mixing is "safe" are those who have had 2 Pfizer jabs. Moreover, there isn't the data to say whether it's safe or not; that's why you always see them state "there is no reason to believe it is unsafe". They had "no reason" to think asbestos would be unsafe either. Also, in the same breath, they also say that if you can match the doses, then that's still the best option. If they were truly interchangeable, they wouldn't put that caveat in there. On top of that, the Pfizer results are better than Moderna (even if it's by a couple %). I can sympathize with people who walk away from their 2nd jab when they find out it's Moderna and they had Pfizer for the 1st.
Potential consequences of mixing aside, even if we accept that it's 100% safe, we still don't know the answer to the bigger question: Does it affect the efficacy? Sure, it might be better than just one jab, but by how much? Can we really expect it to be as effective as 2 Pfizer, or even 2 Moderna jabs? Again, even a percentage counts.
To me, it just seems like they just want to get those 2 jabs in people to boost the numbers because it's "good enough", instead of getting the best possible protection, or even knowing the degree of protection that's going to result.