I did--I always update the iPad first before trying any updates or jailbreaks on the phone. In this case, I had just traded in an original Mini on a Mini2; the new device came with 7.1.2 and I ran it stock on that for a bit over a week before the 8.1 JB was announced. Updated at that point, but was waiting on a Mac-based JB, so it's still stock.
For me, 8.1 has definite pluses (extension for 1Password in Safari & some apps, app widgets in the NC) and minuses (WAY too many Safari bugs on stock OS, occasional lag or "stutters" in certain things, like rotation when on springboard, which gets "stuck" for a few seconds sometimes.) No battery issues here, though others have reported experiencing some.
I love love love app widgets in the NC and the 1Password extension; both of these things make my device much easier to use. But 8.1 stock feels *just* buggy enough that I've been hesitant to add any potential jailbreak or tweak bugs on top of that. I'm not to the point where I regret making the move from 7.1.2 to 8.1 on the rMini, but it's just annoying enough that it makes me a bit reluctant to be stuck on 8.1 waiting for the next JB if 8.1.1 or beyond fixes some of these bugs. And it makes me much more hesitant to lose the stable 7.1.2 JB setup on my iPhone 5 to move up to 8.1.
(Clean install, not from backup, and the stock bugs I'm experiencing have been reported by other rMini and original Air users. I haven't used a device on stock iOS this long in around 5 years. All I can say is it's easier to do on the iPad than it would be on my phone!)