I train w/ a group that contains a couple of guys that deal w/ bad guys for a living. They all have RDS on their work and off duty guns. If I were not so old and lazy I would put in the work. All the reasons not to use one are excuses. Kind of like defending your snubby by proclaiming your enhanced situational awareness skills.
Read NH K9's and Goalie's posts... several times.
If you think you are good enough you are wrong.
mike r