I carry the jumpstart XP-3 with me all the time and wouldn't hesitate to use if I needed it and that's 200-400peak amps, I believe the problem comes when you jump from a running vehicle, but jump boxes are ok to use. Maybe Kapt can shed more light on this.
This was from another thread from Kapt
Generally what happens on a jump, if it goes bad, is the inbound micro breaker gets fried. Once you shut the bike off you never get power again. The problem with jumping is you have no control over the voltage being sent into your system. If the feed exceeds the units capabilities, which it very easily can, then you end up with burned out components.