Canon differs from Nikon in one philosophical way. This allows them to test new features and capabilities before putting them in the demanding hands of pros. The year or so that the EOS3 was on the market before the 1V came out has allowed Canon to include the latest features in the new model and to fix whatever needed fixing. I was able to shoot a test roll, utilizing almost every feature, before even opening the manual. Anyone using multiple mixed bodies will not suffer any confusion.
Build quality appears exceptional.
As we all know by now the 1V has rubber gaskets on every button, knob and body orifice, which makes the camera virtually waterproof. While it's certainly not an underwater camera it'll likely withstand splashes and heavy rain without a qualm. In late May 2000 I took an 8 day rafting trip on the Colorado River and the 1V came through with flying colours. The camera really appears to be as waterproof as Canon claims. Cosmetically the camera appears very similar to the EOS-1n more rounded than the EOS3.