I remember back in the day when Livonia would roll along and spot for me. True, it was useful having his SPR there for a heavier base of fire if needed but overall I've experienced that alone I can be much more effective in most situations.
For me, spotters are useful in some situations and completely superfluous in others. I don't need any 'help' hiding, that is, unless it's a final distance check by a buddy to make sure I don't have any odd ends sticking out but that can just be radio'd in. Spotters in airsoft are fun at times, but in no way a necessity.
From and urban standpoint, the need for a spotter just goes out the window in most cases. If you're fighting alongside riflemen, grenadiers and support gunners, why would you need some guy following you around? It's just one more distraction and focus is key.
Mosin said:
seeing as his rifle shoots a consistant 550 FPS with a .2
I'm pretty sure it shoots a consistent 515, but no big.