I'm on Firefox Mobile right now on my tablet, a Samsung Galaxy Tab Pro 8.4. The full site looks perfectly good with the only exception that "click targets" are annoyingly small.
My suggestion is that each user should be able to set his desired text size / DPI resolution per device (tracked via cookies of course), so that I can have properly clickable comment links and upvote buttons and so on on my tablet, and keep everything as before from my laptop.
While I definitely support the larger format, I'd like to see the top bar laid out in a more mobile-friendly manner. Currently it feels like I've done Ctrl + Plus on the page a few too many times, rather than the site being properly optimised. Shrink the font by one notch and I'm reasonably happy. I realise that this is a work in progress though.
Keep - but dang et. al. can you make the comments link target touch area slightly bigger somehow? It's way to easy to launch the article link when you're trying to tap the comments link.