No matter how useful you find this tool in your profession, it will never stop the haters from coming in and trying to **** all over your party. There are some real losers out there that just have no clue how much more useful this is with the larger screen and pencil for so many "professional" use cases. Maybe they don't have any professional use cases... or any profession?
Anyway, I found myself with a bit of unplanned professional work while waiting for my oil to be changed. I was working with splashtop, coda, 1password, Mail, and a few other sundry apps. The biggest benefit I got from the Pro was when using splashtop, since I wasn't anywhere where using a keyboard made any sense, it was especially nice to have the extra screen space to have the on screen keyboard up while interacting with a remote Windows environment really quite stress free. The high res. support just added earlier today also helped making the smaller text on the scaled screen that much clearer (thus requiring less zooming around.)
I could do this on a smaller iPad, sure. Though switching between apps without the 4GB of ram would very likely have forced me to reconnect to things repeatedly. As it was, I never lost my splashtop connection, never lost my SSH session, never had to wait for safari to reload tabs (azure portal with several views open, anyone who uses this knows navigation can be a tedious pain,) and never had to wait on Mail because it swapped out.
Oh and I'm sure having a beefier CPU helped given all that was going on.
Then later that night I accepted a contract as a word doc in mail, filled it out and signed it using word and notability (and the pencil of course.) Eventually just Word should be able to manage that, I think, with the upcoming drawing additions.
That can be a fairly common task, and maybe there are more automated ways to do it with specific apps, but, it was nice that it was easy to manage, as easy as doing it on my Mac. Maybe easier, since I got to actually sign right on the screen, accurately, instead of having to take a picture or sign with my touchpad or some crap with Preview.
Look, iPad Pro didn't suddenly make iPad capable as a professional tool. I have used iPad as a professional tool FOR FIVE FULL YEARS. What iPad Pro has done is greatly expand the options available for people making more serious use of the device. And yeah, obviously, it could improve things for casual use too. In fact, I use my iPad as much casually as I do professionally. And no, I'm not Frederico Viticci. iPad is a companion to me. I dislike the notebook form factor, and really, notebooks in general. I do my serious work on a beefy desktop. iPad Pro is a really great way to veg out, or work remotely in a lighter manner, a very very smart thin client, sometimes the full client, just depends on what's going on.
Honestly, the only way iPad can't be useful at all to most professionals is if they adamantly refuse to even try.