C0untZer0:
As one who has used my R9 as an EDC piece for seven years now and "exercised" it regularly, I would suggest not being reluctant to practice with yours. Just use the recommended quality ammunition, allow it cool down a bit between strings of fire, clean it after each range session, and change the recoil spring every 200-300 rounds. The springs are inexpensive, and in a full-house 9mm pocket pistol weighing in at only a little over 13 ounces, they do a lot of work.
Although the R9 is not intended for range competition and is the "Ferrari of pocket pistols," it's one tough little gun.