The ring you picked out is a great choice for men. It has a smooth profile, rounded edges, low relief and no fenestrations (cut-out areas that collect crud). That means It can be worn through every activity from mowing the lawn to changing the oil to tuxedo formal. A man's ring shouldn't have to be taken off for dirty, messy activities--that's how they get lost and besides, there's the symbolic reference as well.
Pay attention to the metal--get the strongest most durable metal that has appeal for you personally. Again, the symbolic reference to the durability of a relationship but also, it's going to be on you for a lifetime of typical men's activities. In gold, the higher the carat, the softer the metal. 18 carat is the most beautiful and pure (i.e., not mixed with another alloy like nickel) but it will be a disaster for you--it will show every dent, scratch and ding. This just turns out to be a pain in the ass. If you"re gonna do gold, what you really want is plain and simple 10 carat. I like the titanium idea myself. Stainless steel makes a lot of sense as well.