Why yes , yes I have . Although I haven't completely dismissed it the thought comes with some considerations.
Just two cylinders and exhaust pulses necessitating plenum volume not only on the intake but exhaust side as well.
RPM. Without the advantage of elevated RPM or multiple cylinders to smooth out the power pulses selecting compressor and turbine sizes in order to avoid surge and stall becomes more critical.
Cooling. It's an air cooled motorcycle.
Fuel delivery. Carburation just doesn't cut it unless the entire carb is inside the intake plenum. Alternately supplying intake plenum pressure to the float bowl has it's own issues. Suck through is not an option if you choose to use any charge cooling device. (can you say "BOMB"? )
Mega or micro-squirt does work and is very configurable (the one bright spot)
Heat load on the oil system. A separate pump and sump. Added complexity.
Now it gets weird.
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Okay so that makes sizing easier as well as eliminating lag but then adds the complication of an advanced electrical system.
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Maxwell is a science all to its own.
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Turbo compound. Why not make use of exhaust energy to drive the crankshaft directly as well as feed the engine with compressed atmosphere.
So until you contemplate the entire possibility you don't see all the possibilities or the limitations of current technology. Let's see if anyone sees where this is going 
