I love it. We did it similarly in my league starting a few years ago. Some players still really don't play any Omaha except for the 1-2 times per year we run it in the tournament, but they still seem to like it. And PLO can be a very expensive game to go and take your lumps in cash games, so cheaper tournaments can be a great intro to the game.
I'd be reluctant to play PLO/8 with completely inexperienced players, though. For one thing, the game is much slower as people try to figure out their hands, chop up pots, etc. But it's also common for people to misunderstand/misread their hands when they are learning Omaha, and if you add pot-limit to high-low it's a lot to take in. There's nothing more frustrating as a new player learning the game to lose a big pot not because your hand was worse, but because you genuinely didn't understand the rules correctly.
I’ll stick with high only.
It actually surprises me that PLO plays bigger and faster than NLHE. I know there’s more chasing, coolers, etc., but there also seems to be fewer big pots pre flop. But what do I know? I’ve just recently gotten to the point in the PCF P* games where PLO doesn’t tilt me.