Jacob
What goes around comes around.
If it was walked upon at all there is a high probability that their will be a bit of grit or bit of nail embedded somewhere, and it only takes one!This is hardly reclaimed timber found in a skip or down by the railway. Theres not going to be any grit because its a finely finished piece of wood flooring coated in a hard finish.
Besides, one of those planes is £70 approx, new blades are £35. and buying a plane for the single use isnt tha6t cost efficient.
Not likely to need a new blade on a scrub unless you are at it 24/7. Doesn't matter if they pick up a nick or two you just hone the edge and carry on regardless