Cicero wrote:
A mortar fillet can look much neater than gunned sealants and it's
really quite durable. It needs a bit of practice to get it looking
perfect but the end result looks much better than sealant.

Cic.

Can you get "textured acrylic" in cartridges? Beige/grey sealant with added
sand that looked like cement could be useful for minor repointing and other
small jobs, would have an indefinite shelf-life, and would need so much
practice to get right.
The few times I've tried to use mortar fillets they've shrunk or cracked and
fallen out.

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Reentrant