Wow. Interesting, and bizarre, at the same time. Very tart, and the secondary flavours that come in are the body of the lime with the allspice/clove of the becherovka, which sort of makes an abrubt left turn. I think this one might be an acquired taste (not in a bad way). Certainly one of the more unique flavour combinations. I'm resisting the urge to add a dash more simple to it to round it out a bit more and take the edge off the super tart lime, but I'll hold off for a few more sips at least.
Update: Okay the drink seems to have come together nicely, and now I have this neat tart tingle on my tongue which plays with the clove spice of the becherovka. I see how this one is supposed to work now. Very nice.