Looking forward to reading about your workflow, Edward. Here's mine:
iPad + Camera Connection Kit (or Chinese knockoff) + Snapseed = basic mobile RAW processing
I use my iPad as my mobile image backup (I try not to erase images from the cards until I return home, but sometimes run out of cards). At the end of each day, I use the Camera Connection Kit to transfer the photos from my cards (I shoot RAW, not RAW+), and then pick a couple to send to Snapseed for processing and posting on Facebook/Flickr, etc. I've tried backing up to the cloud via Dropbox, but hotel wifi is never fast enough on the upload side to handle the hundreds of images I take each day. Sometimes I'll try to upload just the best ones from the day and even then it's slow.
My one issue is that I've found it challenging to check for critical focus while on the road. For some reason (maybe the iPad's RAW processor), I zoom into images on the iPad and they look a touch soft but when I get home they are sharp. Not sure what's happening there.
In any case, the iPad is much much better than my netbook was for mobile processing. Faster. Easier. I do wish there were more (and cheaper) tablets that have 64Gb and even 128Gb, as I'm shooting video on the road too and need all the space I can get. BTW, I can even edit video clips on the iPad. Slower, but it works.
I enjoy playing with some of the filters/effects on Snapseed. I rarely process as drastically at home, but on the road I wing it a bit more. Here's a RAW from the Q processed in Snapseed: