Possible? Sure. I wouldn't advise it because, while it doesn't kill Comps to live with trophs, it definitely stresses them out. Indications of stress will manifest in some noticeable behavioral neurosis. I.E they act somewhat normally, for a comp, but everything they do happens twice as fast as they are distracted and drawn to nest protection by all the sudden movement of the trophs.
I'm not a troph guy but I've seen that they are quite aggressive and, while Comps are quite adept at defending themselves in single assault situations they don't quite no what to make of it when they are repeatedly checked out and/or assaulted very frequently.
But weirder things have worked and like I said, I don't think I've ever heard of any Alto dying from Troph harassment (Ususally it's the Altos killing each other!
I have em together. Just a male and female dub and 6 young comps and a pair of calvus.
Agree its something I want to separate ASAP. Even 2 dubs are stressing the Altolamps.
Mix was kind of forced on me by a 7 foot tank braking. So far no dead fish from the mix but I sure want to change it ASAP.