The ESP Guitar Company

Hi, you are correct, The 3-way toggle switch has the standard pickup selection you described. The push pull pot will split both pickups at the same time, so it turns your pickup from humbucker into single coil.

Hi Devan, thanks for your suggestion.

Please, don't

Please don't, lol.
All kidding aside, you can direct mount them if you want to even with the rings...

Just remove the springs and put foam pads underneath.  
I don't see what the big deal is, unless you're doing backflips on stage, the pickups should not be moving around if they're properly installed in the spring system.

Hey, Nick. Can't do backflips, with o or without guitar

Actually is not that easy. The neck pickup cavity is OK, but the bridge pickup cavity is not deep enough for every pickup. As I pointed out in other comment below, not suitable for every pickup. 

I'll post some pics. Cheers!

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Soapbar pickups have a different footprint than that of standard humbuckers, safe to say some modifications would need to be done in order to accommodate another pickup style

I'm glad I'm not the only one not digging the bridge pickup. Also thinking of BKP, but Holy Diver or Nailbomb.

Jan, I have both, and I can maybe help with the decision! Nail bomb is good for 6-strings, but for 7's, the low end is kind of muddy and prominent. Holy Diver is good, but a little bit more difficult to mix in recording since the highs and high mids push through a lot. For 7-strings, I really like the Aftermaths because they have a really nice high and mid balance, with some subdued low end. I barely have to do any EQ adjustment on them, and when I'm just playing to play, they're still gorgeous sounding and clearer than the other two. Each one shines on a different type of guitar, but I feel like the Aftermaths are more well-rounded.

Speaking of active pickups for this guitar... as an example, an EMG 81-7 won't fit in that cavity,... but a SD Blackouts with passive mount would fit just fine. Am I right?

These are passive sized 7 string pickups, so the active sized soapbar housing style pickups will not fit.
Fishman has several options, they make a lot of their Fluence pickups in the 7 string passive sized housings -- the Keith Merrow signature 7's, the Javier Reyes signature 7's, there's many more too that they have that will fit perfectly.

In terms of fitting, the real issue is the depth of an active soapbar, like the EMG81-7... So I had to carve a bit into the cavity to get proper fit of the bridge pickup. Not that much, but it takes some work. Also, getting the correct mounting rings (also the correct curvature of the body or just adjusting the ring with sand paper), the screws for the rings, etc. etc. 

I'm OK with Fishman Fluence and other pickups, but all my guitars have EMG81 or 81-7, and I've using them for more than 20 years now. 

And I really love this guitar, and now it's an absolute beast...!!!

Here she is:

hope you enjoy it

Mine is in the mail. How are you liking yours?