I don't recall the Archimedes ever getting called a "BBC Micro". I remember the introduction of the Archimedes. We had an Acorn Electron, and we'd seen the introduction of various "BBC Masters"; BBCs with more memory, more powerful hardware, but still a BBC. The Archimedes, was always marketed as something completely new, as far as I recall.

My brother had one. Really cool machine, and as far as I remember, on a completely different level than anything that had existed before it. Soon succeeded by the Risc PC, which I mostly remember for being able to accept various configurations of additional processors (it could get either an x86 as co-processor, or several additional ARMs).