I'm shoe shopping... previous purchases have been mtb shoes for the wider toe box, but I'd like to get a road shoe (will be trying different cleats soon, need something that will allow more than my current spd)

Looking thru a Performance catalog, a tri shoe looks very similar to a road shoe. Any reason Not to get a tri shoe? I'm going to put many miles on my bike this year, hope to do my first century too. My shoes are 41, and in every day shoes I'll range from a 9-10, if that matters.

preThanks for your help & advice!