I'm interested in trying because I love all the components and can envision them working well together, but I fear it would be far too tart. The maraschino liqueur has been dropped with no other compensatory sweetening agent.
Not to piggyback with more comments, but I did try the usual Last Word build subbing bergamot juice for lime juice. It tasted pretty much like expected (like a Bergamoty instead of Limey Last Word). I'll need to try it again as my first drink of the night (rather than last) to see if I can appreciate its nuances enough to tweak it at all and make a potential "Earliest Word".