I've just ordered:
http://www.ebay.co.uk/itm/300785773862?s...1439.l2649
and
http://www.ebay.co.uk/itm/110919146076?s...1439.l2649
I think I'm about to order another of the above too, not sure yet though.
Tafforce from P2S had a very similar set up on a recent RV. Seemed to power quite a bit and kept going for the weekend.
When it arrives and I've had a proper play with it I'll whack up a review. I'm hoping it'll keep the baofeng charged, and AA/AAA's etc.
I know neither the battery nor the solar panel provide huge voltage or AHs, but it should be fine for camping etc. Light enough to carry too.