Ah yes, I had forgotten about that one—it’s definitely the closest font I’ve found to Triplicate, and its serif style is partially slab and partially true serif (to a similar degree to Triplicate, really).

Oh yeah, I forgot to address the other point: Go Mono doesn’t really have true italics. One or two of its letter forms are adjusted (double decker a to single decker a), but apart from that it’s just sloped roman. Look at the Triplicate specimens to see the difference, if you want. The whole shape of the character changes.

Go Mono has the slab-style serifs that chrismorgan was referring to.