If it’s forbidden to

In reply to MATD 2012:

If it’s forbidden to “Latinize” Greek by straightening it out and adding serifs, then why not, if one is starting with a Greek design and adding Latin, and wants to create a harmonious multi-script serifed typeface, “Hellenize” the Latin component by removing serifs and loosening it up?

While not the archetypal antiqua model, it would be quite acceptable to conservative taste.

There are several semi-serif designs like this, such as Puyfoulhoux’ Cicero.