I don’t think so. Until we come up with a way for a computer to reliably read my mind, a keyboard will remain the most efficient input method. And no accessory will ever make an iPad/keyboard hybrid as stable or efficient as my laptop with its keyboard.
The iPad can’t run Fusion, it can’t run Bootcamp, it can’t (and will never due to technical limitations) run Xcode, it can’t run VPN Tracker, it can’t run Creative Cloud.
As long as you don’t need an Apple Pencil to get your work done, a laptop will almost always be a better choice. I mean, the four Thunderbolt ports on my MBP can be adapted to do practically anything I need, and I just don’t have that flexibility with an IPP.
I use a Smart Keyboard with my iPad Pro and it works just fine...it is actually the most comfortable keyboard Apple makes, the current Smart Keyboard w/Num Pad running a close second. Typing e-mails, forum posts, reports, etc, I can go as fast as on a MacBook Pro.
I can run Screens on my iPad and connect to my NAS running Windows 10 (granted, my needs may not match yours), I can access a BootCamp Mac the same way, but Windows 10 has exactly zero usefulness in
my workflow (for which I thank God EVERY. SINGLE. DAY).
Do not count out Xcode (or a lighter weight variant of it) at some point. USB-C and display out are already telling me that Apple is thinking about it. The lack of proper access to the Terminal and being able to run necessary build tools is a HUGE deal...unless Apple builds a way for registered Developers to unlock a special build-mode version of iOS. Obviously, that would also limit the iPad to iOS, watchOS, tvOS applications, but never say Never.
I do not need VPN Tracker to connect an iOS device to a VPN, not that every VPN will allow me access via native iOS Settings or via OpenVPN, so that speaks more to the age of the VPN and whether it should be EOL'd than anything else. Sure, I get it...there will Lucent Bricks and old-ass, unpatched Cisco crap out there until the end of time, because the Bank/Credit Union, factory, et al. are too cheap to update it or replace it, I get it. So points to you, for now. It will take a third party to implement a true VPN Tracker competitor as Equinox is firmly a Mac only developer.
Not running Creative Cloud is considered a blessing by some...but seriously, I would not argue that anyone try to design a 300 page catalog on an iPad. Not yet, at least. I also remember the days when trying to do it in Aldus PageMaker (or was it Quark Xpress) was not even possible due to limitations in the app and required the designer to break it into multiple "chapters". Give it time. Someone earlier mentioned a Font Manager...among other things that have been developed in the Mac/PC ecosystem over the past 30 years, so lets give iOS another couple of years to see if it can get up to snuff before we count it out.
I have a TB MacBook Pro, which I love the versatility of the 4 TB3 ports, love the Touch Bar,*gasp*, 90% love the keyboard (hate the arrow keys and there is a certain amount of almost imperceptible"roughness" when typing at speed). But I keep coming back to my iPad Pro, using it more and more, reaching its limitations (especially in Files) and waiting patiently as Apple continues to update and evolve iOS. Trust me, macOS used to just be called System and Finder and it was nothing to write home about. People now just have the benefit of 30 years of evolution. It is no different for the iPad and iOS.
My point is that whenever the iPad versus PC/Mac debate gets heated, the PC/Mac people trot out all the things the iPad cannot do as if the PC/Mac has been doing those things since time immemorial, which they have not. SO MANY THINGS a PC and Mac could not do for so long. Evolution takes time...and commitment.