How is that any easier than running it quickly through lightroom?
If you can go to the effort of taking your tablet and doing a clumsy edit with your fingers as apposed to just taking your laptop and having a little more accuracy with the mouse pad?
I think if you want to pass your post processing to anyone, pass it to a professional company like side car post.
Who really is going to pay a professional photographer to take a photo, only to then have to do all the post processing for themselves?
Sounds like you spent money on a tablet and are desperately trying to find a productive use for it.
I bought my other half one a few years ago, she prefers to use her phone, I prefer to use the laptop, so it just gathers dust. Waste of money in the end.
So your workflow is take the picture, upload it to your tablet, quick edit, show to client, upload again to a computer, re edit with more care and precision, show to client again.
Tether it to a computer, have it automatically load a preset that gets you 80/90% to where you need to be, show the client that before working on the other 10/20%. That way the client doesn't have to see a flat raw conversion and you stream line the whole process.
Your adding to your workload, not to mention your clients workload, it doesn't make sense.
The client has chosen you and your artistic vision, by doing that they trust you to do the job and not just a little bit of it.
Passing PP to a client is saying that they shouldn't trust you, because you have no real belief in your own final product.