As long as you're putting down 10%, a mortgage classified as a second home is no different than a primary mortgage.
Traditionally though, a mortgage on the second hole is a hold typically located in a resort area near the water or some place like that.
Since you do travel extensively for work I think you could make an argument that it's a primary residence or second home. Your loan officer should be more involved.
Rshapiro at assetmortgage dot net