Okay, so according to the Fusion Blades entry, the following happens:
1) Commander buys a Twin-linked Fusion Blaster (which take up 2 slots on his suit)
2) Commander buys Fusion Blades
3) Fusion Blades, as per entry, "replace" the TL Fusion Blaster (which is a whole new, single weapon).
The question is this: How many slots on his suit do Fusion Blades occupy?
Option A: Zero slots, as support systems don't take up slots (or, at least they don't in any other instance).
Option B: 1 Slot, as the Fusion Blades are a single weapon.
Option C: 2 Slots, since the Fusion Blades are basically the same as the TL Fusion Blaster.
Thoughts? I'm *inclined* to go with C, myself, but I was initially assuming B.