Jason,
Are you trying to achieve a small compact rig for ease of transport and setup OR do you have some plans for incognito taping? As far as I know from playing around with various schemes for taping on the sly, I find Schoeps the best choice for flexibility beyond Brian's suggestion of cap interchangability. To the point, I think that if you are truly thinking of a Kangol type of set up...Freelunch's lexan/cable holder/thumbscrew set up can not be beat. Pair that up with the mk4vs with a KCY cable and the caps sit real naturally in the brim of the Kangol without the cables acting all weird and bits poking out. Also, one cable is easier to deal with than two.
KM140 with LC3KAs are a hassle, the cables are a mess. You have to be methodical about putting them away. I think if you were to go that route, I would suggest getting the lemo connector mod from Neumann USA so you can work with the cable without the mic body connection ends flying around....the problem is the kinks that form when the cable is twisted. The mod also allows you to flexibility to use a SX-M2/LS or /LS2.
I know nothing about running 402Xs, and not as flame: I have to say that I have heard more bad sounding 402X tapes than good ones...maybe due to room/PA, location, mic orientation or whatever. So, to me they seem to be less forgiving mics in bad environments than the others you have mentioned.
I remember someone saying quite sometime ago that MG was planning to make an active system for their 200 series caps. Is this still a rumour or a pipe-dream?