I bought a pair of these...cracking offer from Rock and Run if they've got your size:
These are still 5:10s admittedly, but designed as an approach shoe rather than a bike specific one. I've found them plenty grippy enough for hike a bike, even in mud and wet - I also use them for walking (coast paths, Dartmoor etc) - but great on the bike too. For a weekend away doing a mix of different outdoor stuff, I really only need these.
Despite being a fan, I'd avoid Merrells for the bike personally - I had a pair of Chameleons. They're good shoes but the soles have a weird grippy outer layer which get torn to shreds on pedal pins.