That's more like a couthie spurtle

I like that Tom
Nic a char, can you really see folks using a mucky old brush shaft for a spurtle ? Maybe on a ferme toun feeding forty to sixty folks they'd use something like, but not a lot of use in a house with a small pot.
If the oatmeal, and it is oatmeal in Scotland, or bere meal, is soaked overnight, and it commonly was, and is, then it only takes at most ten minutes cooking the next morning. Just bring it slowly up to the boil and keep it just on the 'gloopy' stage until it all goes thick. It's cooked

I still make mine like that. The original post was my oatmeal going in to soak overnight for my breakfast. (and funnily enough my lunch 'cos I was too busy to cook the day after)
I think there's an awful lot of mince talked as folks make things look 'rustic' and try to sell stuff to the tourists.
Spurtles, spirtles and the like are not just Scottish though; they're well known in the North of England too. They're used anywhere that folks commonly ate oats and barley. English oatcakes need something like the one Tom's made to turn their raised dough ones. I've cooked on a girdle (bakestone) since I was a child, there's a knack to turning things on it by hand, but sometimes you do need a spatula type tool. Tom's looks ideal for most of those
Can't resist this. It was one of the rhymes I taught my children. Just because the words were brilliant

Don't think the man liked his porridge much though
Sink Song
Scouring out the porridge pot
Round and round and round!
Out with all the scraith and scoopery,
Life the eely ooly droopery,
Chase the glubbery slubbery gloopery
Round and round and round!
Out with all the doleful dithery,
Ladle out the slimy slithery,
Hunt and catch the hithery thithery,
Round and round and round!
Out with all the obbly gubbly,
On the stove it burns so bubbly,
Use the spoon and use it doubly,
Round and round and round.
J.A. Lindon
M