I've mixed BRM with a lot of things, in fact, that is the best way to smoke it, as an adjunct to just giving a little decent cherry taste to another good tobacco. I would try around 50/50 - 60/40 or thereabouts with BRM being the lesser of the two depending on what you mix it with and adjust from there.
To be honest, BRM I think works even better with an honest quality tobacco, I'm not sure I'd like it with another aro, especially one like 1-Q, but that is just me.
1-Q, I guess it is a sort of honey-vanilla sort of thing. Not much else going on there without the flavoring.