I don’t have a laptop. I had a MacBook bought new last year from B&H and decided to be more mobile with a iPad and purchased the mini 5 cellular when it came out. I do have a Mac mini (2018 model) that was purchased for iTunes server use. I occasionally use it for iMazing and iTunes backups for my new SE and iPad. If I need to do something that either can‘t be done on the iPad or is much easier on a Mac, I use the Mac Mini server, which is rare.
As to iPad usage, it is used 99% of the time, versus my phone. Said usage includes Numbers spreadsheet and other various Centrify work usage, along with the typical email, perusing the internet, Audible, iBooks, Apple Music, viewing YouTube (anonymously) tech related video, writing stories and books etc. If I need to render video, the iPad Pro will allow me to do that on the go. I do plan on taking my iPad Pro out of the house regularly like I have my mini 5, albeit not every time I leave the house.
I prefer using the larger screen and mobility of the iPad, versus trying to rely on the iPhone all the time. I did the latter for years, and got tired of getting a larger and larger (and more expensive) iPhone brick to carry and try and fit in a pocket.
I seriously considered getting the new MacBook Air. The mobility and features of the powerhouse iPad Pro 11 made the decision a little easier.
By the way, if you do make the purchase for both items, make sure and buy a longer USB-C cable. The one provided by Apple is rather short, in my opinion. It makes charging much easier. I like to use my ipad while charging a lot of the time. And using the Apple provided cable makes that almost impossible from the comfy recliner. I purchased the longer cable last night and will be picking it up at the Apple store today, along with a new Apple Pencil.