Speed Passion question

[Si2008]

I'm considering reverting to running speed passion motors (v4) as after trying one i really liked the smooth power delivery.

I just wanted to ask about the bullet connectors that are used on SP motors. I'm always wary of using removable connectors for off road racing due to the potential for them to work loose. Am i worrying needlessly? Is the chance of a bullet connector from a SP motor coming out unlikely? I can always solder direct of course but it is actually really useful being able to switch motors without having to pull out the soldering iron.