Do they accept the universal MRs (like Yuri's) at Alamy or do I have to get new ones signed all over again? I just registered over there and don't want to proceed until I'm sure about this, it would just be too much hassle to get them all signed again

I used the dreamstime one, no problem.

Great, tnx for the reply, then I guess I'll get to business ASAP

Only one MR needed for one model at Alamy? That's a good news.