[Designers] opening adobe files (.ai & .psd) & uses of a tablet

Hey guys, have been searching this for a while, however could not find a clear answer.
I am looking into purchasing a tablet, mainly to replace lugging my laptop while I am out meeting with clients.

However I need to open "illustrator" and "photoshop" files with the tablet.
Is this possible? (now that Adobe has scrapped their touch apps)

AND, if you are a designer with a tablet, could you tell me if you find it useful in terms of presentation? (for portfolio & files)

thanks!