I've owned a plug-in hybrid and having a home charger I didn't find it in the slightest bit inconvenient. If you're mainly doing relatively short journeys I'd say it was the ideal vehicle. The only downside is on longer journeys when the charge runs out your consumption will be relatively high.
The real plus that I found was not having to go into filling stations more than once a month.
Having said all of that some of the latest self-charging hybrids are giving very good fuel mileage in all circumstances. The latest Honda Civic for example has a 2.0 litre engine and 55 mpg overall seems to be readily achievable. Gets very good reviews too.
