Given the great vesrsatility of the Quorn, am sure that it can be set up to grind the cutting edges of end mills.
Grinding the helical flutes might be a little more ninvolved, am sure that bit can be done.
Certainly sharpening the end teeth is possible on less complicate machines, (Have even managed it on my simple Worden, using a homemade ER 20 collet holder, originally made for drill grinding.)
Howard