Yes, Father's Day is a day designated to celebrating all the dads in the world who get it done day and day out. They deserve a gift that thanks them for all they do and brings a smile to their face. And if that happens to be a Father's Day gifts that give mom some alone time too, well then it's just better for everyone involved.
Although it's impossible to generalize today's modern family (or at least highly unadvisable), in most homes, mom spends the majority of the time with the kids, does the majority of the housework, and has the least amount of time to herself. This hold true whether she holds full-time jobs outside the home, works from home, or stays home full time. Most men work full time jobs and are away from their family for most of the day, so it makes sense that some quality time together would be high on their list of special ways to spend their Father's Day
Letting Dad get some quality time with the kiddos while Mom conveniently get some much needed alone time, is one of the best parenting win-win's out there. And if the event is enticing enough, chances are he won't even mind taking the kids out for a little one on one action.