They do stop great two fingered. Shifters don’t get in the way at all however I have freakishly large Hands. I can’t speak to the feel with smaller paws. They are a hit in the cyclocross scene. My LBS does sell a lot of them too.
I like the look of those Gevenelle things – especially as the ratchet inside Rival shifters appears to be made of cheese. Shame they don’t appear to work with SRAM hydro brakes.
I think the orange one has slightly different chainstays, to make a bit more room for fatter tyres. 40c Nanos seem to suit me perfectly, but I think you can still get a 2-inch MTB tyre into the blue one if you wanted to.