It's really useful yeah. Once I managed to get control of both screens, my "aiming range" improved a lot, and with it my high scores. Also, I was capable of taking down the bosses way more faster than before. I'll be bold with the next sentence, I've played all SF games and I feel the double screen thing is optimal for this game. Yay. It just works wonders. My only problem is barrel rolls, but that could be fixed easily. 

Yes what is the world coming to :P

Can I tell you a secret...I hated Bloodbourne. Dont tell anyone because that's not allowed either.

I adore the controls! Didn't take my long at all to get used to them. I'm still improving slightly, but that's to be expected with any game the more you play.

Barrel rolling could be a bit easier to deal with but that's the only potential issue I have which I don't even mind.

Yeah, but I think they know (or at least, they should) that moving the stick twice in one direction is harder and more uncomfortable than clicking a button twice. It's way easier to do barrel rolls in the N64 game. Also, when I'm using the Walker, sometimes I do "barrel rolls", but I don't want to do them. Because I want to adjust the Walker line of vision with the right stick, and if I move the stick twice, barrel roll XD. Barrel rolls are definitely my main grip with the control scheme. I don't think it's a really big and problematic deal, but it's something to acknowledge.

Your secret is safe with me, I couldn't get into Dark Souls 3 er I mean Bloodborne.

Does anyone else have to recalibrate every 30 seconds?

What do those 90+ Rated games have to do with the topic at hand?

Almost every reviewer complained about the controls, for example:

IGN

- Ackward Controls

GamesRadar

...but its forced reliance on the Gamepad's screen and motion controls cause it to barrel roll right into mediocrity.

TheSixthAxis

Sadly it’s somewhat fitting that one of the final Wii U first-party games still doesn’t convince us on the viability of a dual-screen home console.

We got this covered

Star Fox Zero is a decent but unspectacular return of a once great series, and is held back by forced motion controls and some questionable level design.

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There are way more like that. It is a general complain.

I have the occasional recalibrate, but I generally keep the gamepad as still as possible. I find waving around vigorously causes the centering to be off, the trick is to be quick but subtle at the same time. Got to have a nice deft touch lol.

Lemme get the Easy Bake Oven!

I'm glad that some people are cool with it. I've beaten it and am currently unlocking secret levels, and I think the game and its controls are absolute butt.