The BCC lensblur will be installed as a plug-in for Boris FX. And Boris FX will be installed as a plug-in for Vegas (32 bits Vegas only at this moment). Just download the trials and see how it works.
When you plan to buy Boris FX and the BCC Lens blur, you might also consider to buy Boris RED4 instead of the other two. If you purchase Boris RED4 now, you will get Boris RED 5 for free very soon (maybe even before the end of september if I remember well…).
Boris RED 5 works as a standalone and as a plug-in for Vegas, including the 64 bits version of Vegas. In addition, Boris RED 5 already contains the BCC Lensblur plug-in.
Theo