I heavily use both Alloy 2 and the ProChannel.
Of all the FX I've picked up outside of included Cakewalk and add-on ProChannel modules, Alloy 2 is my first go to Plug-in. I can get to a great sound quickly with this one tool, or I can just use a part of it as needed.
What's great is using both Alloy 2 and the ProChannel together. I add an FX Chain to the ProChannel and put Alloy 2 in there to do its thing wherever I want in the ProChannel flow. I use Alloy 2 on both tracks and buses.
That said, it's fantastic with tracks. I tend to freeze tracks after I've done adjustments and it's sounding good. That includes freezing Alloy 2 if it's in a track's ProChannel FX chain. This is great because I can get all of the power and goodness from whatever combo of modules and/or Alloy 2 I have in the ProChannel, and also have no hit on the CPU.
If you haven't picked up on the theme here, I really like Alloy 2. It has a lot of easy to understand features and flexibility. And it has a lot of great presets. Just turning it on on an acoustic guitar track is attention grabbing, like wow!