Форумы / Cotonti / Support / Custom header for plugin?

Hmm, or maybe I remember performance issues from Genoa...?
I had a site which had custom header every single list category and it loaded 2x-3x slower than normally.

Allright then, I will check custom headers. Thanks!

Added 12 minutes later:

Hmm, strange.

I added a custom header for a list category some-company-name:

header.some-company-name.tpl

... yet I can't see any changes. I use Siena 9.11

Is it only for lists and not for a certain category?

P.S. 2 - I decided to use lists since when I made a plugin name with dashes in the folder/filenames (plugin some-company-name), Cotonti didn't recognize it (I couldn't navigate to the plugin)

Added 25 minutes later:

I made IF statement in header.list.tpl and it works so far. But what about plugin names?