2 hours ago, teonzo said:Sliding on the other sense is difficult, since the ganache will tend to stick to the parchment paper / silpat
Not if you pre-coat the bottom with a foot for dipping.
But otherwise, good point about the angle being different something to consider. You'd need a narrow slab of ganache with a thin bottom on a narrow cutting board that the cheese wire handles will extend beyond, then cut at an angle, and have a groove for the wire to go into so it cuts through the foot ... probably more trouble than it saves!