Did you even bother to foillow my link? I copy it here for your convenience.
Or here is another one. Or here. In fact, almost all of them have an ARM and x86 build.

If the Warehouse client cannot cope with binaries for different targets then fix the client, not introduce dodgy workarounds like multiple repositories.

PS:
If Maemo is not good enough for you, here is a random Openrepos-style page for Ubuntu, containing two different binaries for "different devices and architectures".