no - but that's a very good idea :-)
But the problem with real acorns is they dry out and shrink.
Once you cut them in half, you have to glue them back together and they shrink a lot faster. The sealer would help with that.

Plus most trees have dropped them now, it's a fairly short harvest window.
Might try the sealer next year :-)

So the artificial ones are better as i can make them all year round :-)