OM System 12-45mm f/4 vs. 12-40mm f/2.8

I'm only interested in hearing from those who have both so if you don't have both (or either) and reply, don't be offended if I ignore you, don't take it personally.

Camera is an OM-5. Going to be traveling abroad and am trying to decide on taking either my 12-45mm f/4 and my 12mm f/2 (for lower light interiors) or ​the 12-40mm f/2.8 alone.
​I can see advantages with either choice. The 12-45mm which I'll be using probably 80+% of the time is a bit smaller/lighter but it means carrying the 12mm f/2 along with me. The 12-40mm on the other hand is not that much heavier and with f/2.8 it's fast enough that I can leave the 12mm at home.

So again, for those who have both, what would you recommend?

I think you need to limit your audience further to people who have all 3 lenses

12mm is not wide enough. You need 8 or 9mm

OP should also further limit the audience to OM-5 owners only as the balance will obviously be different on other bodies.