I owned and played one for a number of years. Very nice... but very big and most are very heavy. I just couldn't take the weight anymore. The Pope pre is nice, but rather mellow. The Duncan pickups will give you a little more grind, and Aero's a little more warmth IMO. The dual coil design is nice.... for both a humbucking and single coil sound... although many brands offer this (I have Aero Duals and a Pope 4 band in my Stambaugh... it's small, light and sounds great!).
If you like that very large neck profile at the nut (the necks are BIG), and the very full, warm sound, they are great.
You can see a picture of mine in my profile.... nice! If I were to do it over, I would seriously consider the bolt-on Emperor.... less costly, same look, quicker build time, and I personally like the sound and feel of a bolt on neck.... pure personal opinion. I also like the Monarch body style better (the single cut Imperial and the Garrison model are based on that smaller body style)... however, if you get the dual coils, the smaller body can seem a little crowded versus the Emperor or EmperorII.
Also.... if you order one, the wait time is very long now... I believe approaching two years or so. I have a buddy who is at 15 months now for his EmperorII Elite 5, with nothing in sight at all!