not sure what MB mode is.
Yes, very possible. Do you have an aux fuse box on the bike? IE. For running an autocom off or something like that? If you do you can plug your lights straight into the box (if you don't want to be able to switch them off except when the ignition is off).
If you don't have a aux fusebox the best way would be to get a relay (N02AW) and a fuse holder (KK80B) from Maplins. Oh, get some female spades for connecting the wires to the relay (HF10L).
On the relay there will be 5 pins - 85, 86, 30, 87, 87a.
Run the fuse holder between pin 30 and your battery +12VDC. Run a wire between your dipped beam power wire and pin 85. Connect 87 to your optilux lights positive wire (white we think from above). Connect 86 and your ground wires from the optilux lights to your battery ground. You don't need to use 87a so I would tape that off with electrical tape.
Depending on your size bulbs, put the appropriate size fuse in the fuse holder (2 x 35w bulbs = around 6A so go with a 10A fuse, 2 x 55w bulbs = around 10A so put a 15A fuse in).
If you want to add a manual switch to the handlebars insert it in the wire between 85 and your dipped beam +12VDC wire.