I dont use the cloud. Note with the new iPad pro, my iPad is now more powerful than most laptops except the very high end. I also have a terabyte of storage. If you need it you will soon be able to run the full version of PS.
I do a download each day and use a different card for each day as a second backup.
Of course you still can not plug a portable HD into an iPad and move data back and forth. As noted above, there are work around s for this.