With shoots that happen on location, mobility becomes important and the ability to show clients a quick preview of the shoot right after it happens makes mobile devices ideal for many photography usecases.
Now Adobe has launched a preview of the 'full' Photoshop and Lightroom CC on the iPad Pro (https://www.theverge.com/2018/10/15/17969754/adobe-photoshop...) and this makes the entire workflow very smooth.
Even as a 'prosumer' photographer, I've started using my iPad to download and do quick ratings and edits on a flight back from a shoot rather than waiting for days till I get back to my desktop or carrying a heavy Macbook/Air around to a location. The real killer here was Adobe's ability to store raw images in the cloud and sync edits made on different clients.