I have similar feet, 11/12 and wide. Finding comfortable shoes not easy (for work shoes I tend to have Clarks wide fitting or church wide for very smart.)
I have AM40s and also 5.10 impact lows. 5.10s are much more comfortablef with a wider fitting. AM40s are OK, but they are more narrow so I have to size up which makes them a. Little long and still a little neat. Fine with very thin socks but impossible with any winter socks.
other pros and cons
AM40s: look OK, water kept out of shoe better than 5.10s, cooler than 5.10s (temp), not as attached to pedals as 510s. I have found the vibram sole is disintegrating around the pedal pins (normal welgo copies), which has made them pretty much useless now as too slidey on pedals.
5.10s look daft, but fit great, grip fabulously. They are a sponge for water, and they let most of it in also! very robust however.
HTH
kev