| Be aware that ruling that way really reduces the incentive for a sorceror to take the other feat reaper's touch which explicitly says that you can...
My favorite visualization for Reaper's touch comes from a recent Doctor Strange Cartoon - The sorcerors were able to conjure weapons, though not all of them did some seemed to be using their fists with runes glowing around them -- virtually perfect Reaper's touch. You could almost picture the Sorcerous Blade Channeling as somebody grabbing a dagger and it growing into a big weapon dripping with energy that looked like the power they are using... green and black sizzling and popping energy for acid orb --- would be exactly what Mordo used. | 
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