I have been using the same Xdm 3.8 for carry as I shoot for USPSA. I have had a few people suggest upgrading my sites. Since I am using the gun for both carry and planning to purchase a new pistol for USPSA I was thinking about putting on a set of Heinie Ledge Strait 8 Night Site's. My question is should I wait to put them on until I am just using the gun for carry or would they work well for matches too? I know they wont be as easy to see as a big red fiber optic on front but just wanted to get some suggestions...