Héilics Órbhuí

Yeah, aside from the fact that it’s not really theoretically possible within the confines of what I understand of the grammar, I have just never encountered it (which doesn’t mean it doesn’t happen – I’m no expert – but if Lughaidh says he’s never seen it either, I think it’s probably something people don’t say).

Btw, there is an actual verb which also means “to miss” – cronaigh, and you can use that in the impersonal.

cronófar gó mór é.
he’ll be greatly missed.
(from beo.ie)