Yeah, great album (and The Pleasure Principle is at least every bit as good). And that cover is a very good one overall, although it's always irked me that they chose not to rig the shoot so that Gary was looking towards a real, or more convincingly mocked-up window, showing a better-realised view (although I suppose that might've weakened the 'replica' pun). The painting behind the window frame gives off a flat-backdrop vibe that works against the stark urban-robo look that Numers is going for. A more successfully executed cover idea is the Wyndham/Midwich-y one for the Complex single:
The typeface used is close to the one used on Replicas (Eurostile), but is more unusual and interesting.