So I tried it out a couple days ago and wow, it is definitely worth it if you can find one. Now, I am not some "boost connoisseur" because frankly, if an amp cannot get the tone I want without a boost, then it is not the right amp for me especially with how much these things cost. The exception is single channel amps since a boost can almost be like having a different channel. There are amps though that need a boost like the Rectifier, Uberschall, etc.
With that said, I had no idea an Uber could get so tight! I did have to lower the gain (by like ~30%) and I lowered the presence and treble because this pedal hits the front HARD, and I have the level only set at about 10 o'clock. I may try and get a clip just to show what it does.