Big thanks to WH867, I finally got my ideal set up for MP 600. Been looking for one with carbide cutter, saw coupler, file and scissors, but Gerber apparently never put all of them in the same package.
The carbide cutter is very nice, I tried it on some fishing snaps that dented my side cutters, and it chewed through them without problem. Saw coupler takes U shank jigsaw blade, but apparently this particular style is not very popular. I wanted Bosch bi metal blades but they come in either T shank or U shank without the hole. Only one I can find that fits is B&D.
With a few extra blades tucked in sheath, it's very versatile, although this style of saw is a little slower than the double cut wood saw standard on other MTs.
Also something interesting I noticed, if the pivot is loosened a bit, the tools will snap back into the handle much like a lock back knife will. I recall swisstool is like this but that has backspring, this is purely due to the lock.
In retrospect thou, I should've gone with can opener instead of bottle opener, since the former is more difficult to improvise than latter.
Anyway I'm happy with the result, a bit large/heavy for EDC thou so I'm sticking with MP400 for that.