Just wanted to report back a few weeks later in to a 14 song mix project...
X-Comp on the 2Bus of every song that I've mixed for this project so far - Like nothing I've ever used before. It is like opening a birthday present every time I load a new instance. There has been absolutely nothing that I've thrown at it that it doesn't handle with grace and ability. The frequency 'ignoring' feature is possibly the coolest feature I've ever seen on a non-multiband compressor. It has the 'expensive' SSL sound, can be pushed ultra-hard, made to sound completely modern or completely classic (and everything in between) and is just the most versatile compressor I've ever used hardware or software. It also sounds as good as a lot of good or great outboards...and a lot better than crap outboards, IMO (I know because I have currently and in the past, owned both

).
I have it on the 2Bus for 11 songs now. I also have it on various tracks throughout those 8 songs. It is really just blowing me away. Not all of these songs sound the same either. There is some versatility in the sounds and instruments, arrangements, intensities, etc. X-Comp is more than versatile enough for every one of them. Basically, I've definitely found my new 2Bus comp and a new 'top 5' compressor! I just wanted to gush about it more.
PS - The X-EQ is equally amazing. I have that on every 2Bus as well, but only for HPF/LPF. But that is a whole new thread.