Large Scale Central

Sprog 3

 Thinking of buying one.
 
1. Has anyone used the Sprog 3 to program decoders in large scale?
2. Has anyone used the Sprog3 without a booster to run a layout?
I know that the sprog 3 has only a 2.5 amp output.
I have a small layout that dose not use more than a total of 2-3 amps.
 
Thanks
Richard