Hachamovitch also launched a pre-emptive strike against critics of the dual-IE10 decision.
"Pessimists may criticize what they will call 'two browsers,'" said Hachamovitch. "There's only one browsing engine, which you can use with two different 'skins [and] over time, the Metro style experience will serve more and more mainstream browsing scenarios."
Al Hilwa, an analyst with IDC, agreed that two IE browsers shouldn't trouble Windows 8 users.
"I don't see a problem with that, since the key underlying technologies are unified," Hilwa said in an email interview. "The two user-facing parts of the browser show how a developer can target both styles of using Windows 8 if they choose. Clearly, touch is a new way that requires a new model of programming and special attention, so this is warranted."
The Metro IE10 app is available only as part of the Windows 8 developer preview. That early look at the OS can be downloaded by anyone from Microsoft's website.
The desktop version of IE10 relies on plug-ins like Flash to properly display some sites.
Gregg Keizer covers Microsoft, security issues, Apple, Web browsers and general technology breaking news for Computerworld. Follow Gregg on Twitter at @gkeizer or subscribe to Gregg's RSS feed. His email address is email@example.com.
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