I used to have them when my old job paid for everything... but now with Creative Cloud! Lots of clients require .INDD or .PSD so no choice really, industry typecast I still use gimp and also Sketch is becoming a lot more popular.
EDIT: sorry mis-read. I have used the tablet version and its really the best, but I figured you meant the desktop version hence saying using CC/Sketch. But yes on iPad did find this to be cool, we had a Beta version. I also like Procreate but depends on how far you need to go and you really need the iPad pro and pencil https://itunes.apple.com/us/app/procreate-sketch-paint-create/id425073498?mt=8