Multiple versions of Qt in Windows?

Just to confirm, if I want to keep multiple versions of Qt on my Windows system, the limiting factor seems to be the Visual Studio integration stuff - I can't have more than one version of it installed, and specific versions of the VS Integration are tied to specific versions of Qt? (1.2.1 with 4.2.2, 1.3.1 with 4.3.1, etc)

Install only the latest VS Integration and as many as Qt 4.x distributions as you want.

You can select the current version in Tools/Options/Qt.

Please note that you might need to regenerate the vcproj when you change the versions.

Regards