We,too, issued the 6906 for about 8 years. Ours were issued with the 15 rd. mags and grip adapters. To be honest, at the time I wished we'd gone with the 5903. Those grip adapters were a PITA when making mag changes and could hang up on the heel of your hand when releasing, or pinch it when seating.
That said I, along with several others, feel the 6906 is more accurate than the full size guns, at least in our experience. Go figure. Although I didn't really care for it as a duty gun, the 6906 with an extended mag in the gun is an excellent choice for CCW. They are accurate, extremely reliable, and with quality modern ammo are hard to beat.