It works fairly well, except the biggest caveat is when you re-install blackberry software through the loader, it will remove ALL these modules manually loaded..

However, in 4.0, you are able to do OTA installs of software. Some software OTA requires 'a signature' which you can get around by uploading manually..

in 3.7 it's the same,except you can't do OTA installs of software.

Either way, even in 4.0 i find the above procedure handy...