Fair point. I wonder if the increasing number of us tech firms setting up in .ie (for whatever reason, being an Irish graduate I know it's not for the skills pool) find the adjustment difficult - 20 days minimum, 25 not uncommon, with the ability to carry some leave across years generally accepted.

edit Anecdotally, even companies based in the UK have had trouble with the difference in employment law when setting up (or wrapping up) here, though I would put that down to lack of diligence rather than any cultural thing.