Yes! We have the Morrflate Air Hub and love it. When airing up or down, just set it and go about doing other things. It keeps track and shuts off once it reaches setpoint. We do all four tires at once.
You are 50/50 on weight, but we are rear axle heavy. We'll run same pressure in all four for highway use between trail air downs, but once we are ready for interstate speeds for more than an hour and want more pressure in the rear, we air up all four at once, to desired front tire pressure, pop the hose off both front tires, then reset Air Hub up 5psi and run it again to on just the rear.
For minor air downs for washboard, I just use Coyote deflators (similar to Staun deflators) set to 36 - 38psi. Less hassle for a minor air down. But if going below that (including our typical 18 to 24psi for slow, gnarly trails, I get out the morrflate hoses and air hub.
Air hub does have a lithium battery, but it lasts forever. In the last two years, I've given it a little charge only once just to keep it in the sweet zone for lithium (target of 60 to 80% state of charge).