sorry for my post. Your initial one wasn't worded wrong - I apparently read it wrong
I'm a complete newbie in 1/12th, but the one time I raced the class It was very fast and I could tell that it will only help my driving for other classes. I primarily focus on on-road nitro, but I am now using 1/12 for winter stick time and reflexes.
I race a gang of different on-road classes, electric and nitro, and sometimes it takes a few laps to get the feel for the class when switching around same day - but stick time helps more than hurts IMO.
Now I raced a xxx-nt for a hot minute but I didn't enjoy off-road because it seemed the racers weren't as good and the corner speeds were slow-motion. Off-road seems like you need as much or more throttle control than on-road, but on-road seems like you need faster,smoother steering inputs to be really good.
This may be why on-road racers usually do well off-road but sometimes off-road guys can't run the same level on-road. (See fast-losi-off-road-pro-driving-for-trinity-whose-name-we-won't mention's results at the ROAR on-road 200mm nats '02).
I will say I've heard some very experienced electric sedan racers don't like to run sedan and 1/12th simultaneously when preparing for major races because they've said 1/12 "timing" is different.
But in your case off-road is different enough and you'd never run the two on the same day so It's probably a non-issue. I would think it would be hard to un-learn what you know in gas, but running electric does help you with taking good lines and focusing on maintaining corner speed. Plus if you're going 6 weeks no racing it's a no-brainer - get your 12th and hit the track.
Around these parts (TN,AR,LA) 1/12th is making a strong comeback and it seems less expensive than sedans.