Indeed, the Shadows are not IDPA legal. Awesome in USPSA production division though.
I do have a cajunized SP-01 tactical that is idpa legal, great for USPSA, and more reasonable for carry as well. The trigger actually turned out to be pretty close to my Shadow 2's, the main difference being a longer reset. The decocker and firing pin block also add some practicality for carry, and I would not ever carry my Shadow 2 due to the lack of the firing pin block. So if you really want a "do it all" gun, I really reccomend the SP-01 tac. But, a 75B, 75BD, or SP-01 could all fill that role depending on your preferences.