katekicks:Wildcard is trying to get me into a BP/W, but it all seems so bodged together (adding pockets etc) that I'm skeptical..
That's one way to look at it. Another is the pockets can be added or taken off as necessary. You can have different pocket types, sizes and positions to suit your needs.
If you don't need the extra stability and/or weight of a BP, take a look at the Transpac. You get the customize ability of a BP without having to deal with plate, bolts, nuts, sta, etc..