You don't need a pickguard to be able to switch pickups. Everything would just be routed on the backside, and the slot for your switch, and holes for your knobs. Then if you decide you want a pickguard, you put it on. Now if you do this, then you will have your screw holes in the body, and most likely not go back to one without a guard, but it at least give you the option in the beginning. If you front route it - you have no choice - you need a guard!
Maybe I am not understanding your comment?
Actually, I misunderstood your comment. I thought you were suggesting that I not use a switch i was running on 2 hours of sleep yesterday and I had a hangover. Sorry about the confusion!
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Most of the guitars I've had have all had something changed on them. Unfortunately all the stuff I could get my hands on never quite matched. For example, I had a gold bridge on a black and white guitar, and that's it. On my bass, I have 1 gold knob on a black body with silver pinstriping and 2 silver knobs, and a brass nut. Kinda junky, but the mixture of colors kinda stuck with me.
As far as the ferrules go, they're supposed to be black, and the neck is going to be my white ibanez's neck. My photoshop skills kinda suck, and again, there was lack of sleep involved . I should definately do a more accurate representation of the two final products... after these messages from our sponsors.