Yes, I was never questioning the importance of slew rate is determining the useful bandwidth of an op amp. I completely agree with you on that. I was just correcting a common misconception about the theoretical small-signal bandwidth versus gain for an inverting amp.MORE TO BANDWIDTH
Although fu (GBP) and gain play a major role in determining bandwidth, there's more to it. Slew rate and heavy loading can cut into your bandwidth. Slew rate would not only make an interesting design topic, but a challenging simulation topic as well. Its on the list of future topics.
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An once again we can see that slew rate must play an important part in determining the usefulness of an op amp.