All of the above works for burning.
The 2 flues here are brushed prophalactically ( love big words
) only 1X/year. The fibergalss brushes work fine for Selkirk SS chimneys, though friends use metal without any harm.
More important is to burn hotter fires. Open the ash door or other door once each day usually in the morning ash emptying, to burn off any creosote from a low night fire. Done each day or regularly depending how the stoves are used, it will prevent any buildup of creosote.
Also: if you don't need high heat, build smaller but hot fires with smaller loads.
Always give the load, whether seasoned or wet, time to get burning so that the wood has time to get to the coaling stage. Most firewood is never really "seasoned" completely anyhow unless you have $$$ to kiln dry.
Doing all this is not a big deal. There's never a problem with creosote or buildup, except in the shoulder seasons with smaller low fires. Then the cap and screen --the coldest part of the flue--may get some buildup. Then a good hot open door fire burns it off.
The stoves here have been going 24/7 since early November--no real backup.
Rule #1 through infinity: don't go on a 10 pitch roof in winter. :jawdrop: