Couple of Romani questions:

When the Romani get the Polybian Reforms, can they still train Camillian units if they haven't upgraded to Polybian MICs?

If I control at least 90 territories during the Camillian Era (I own more than 90 territories in my current Romani campaign), do I advance to the Marian Military Era right after reaching the Polybian Reforms? After all, MarcusAureliusAntonius does say that there are two ways to attain the Marian reforms, 1. the first one with a certain kind of FM, certain date, as well as some other conditions and 2. the second one where you just have to own 90 territories with no other requirements.

So does this mean that right after the Polybian reforms (I am on the brink of them) I will immediately advance to the Marian Military Era? You don't have to upgrade your MICs to get Marian units, do you? Does this also mean that I will not really have time to train the Polybian units? Can you train Camillian units in the MArian Era if you haven't built the new MICs?

Sorry for asking so many questions, I am just rather confused right now.
I am a big fan of Camillian units, especially the Triarii, and I would rather not have the reforms. Marian units aren't bad either and I do sort of like them, but the Polybian units just seem like a downgrade compared to the Camillian soldiers. One last question: can you train Camillian units in one city and Marian in another if one city has the old MICs and another has the new ones?