The US experimental cavalry sword used the same blade profile as the M1902, so we can't say the blades were entirely worthless. The Philippine Constabulary swords were definitely field swords but had a different wire wrapped grip and slightly heavier hilt.
The 1902 is well covered in Peterson's old testament. I have a short bladed Colonial brand example that aside from pretty blade etchings might make for a weapon if needed but no doubt an officer would have a pistol as well.
While the order for the m1902 was to be for all Army officers, I little doubt a cavalry officer wouldn't favor the 1906, which was just a steel hilted civil war pattern The 1913 scabbard was attached directly to the horse's rig.
http://www.usmilitariaforum.com/foru...-and-scabbard/
The fellows mentioned above are vastly more knowledgeable regarding 20th century US swords. I am kind of guilty in absorbing information through reading their thoughts.
This thread for the Philippine swords. It does show a belt and single strap.
http://www.usmilitariaforum.com/foru...fficer-swords/
Cheers
GC