Do you exercise your legs? If so, try not to go to the gym with those because you may end injuring your legs and feet, especially your feet if you use heavy boots with no flexibility, you'll end with some issues on the long term.
Gym clothing is made that way for a reason, don't neglect your health just because you hate the standard
You're also wearing down your precious boots if you exercise daily, and nice boots trend to be quite pricy to end buying them more often