iv herd of guys doing this on scalers and crawlers as a way to further "waterproof" things.
idk, personally id rather have the on/off switch. after 14 years in the hobby iv yet to have one fail on me. on the other hand they are probably more a convenience and/or safety item more than anything.
my opinion, leave it on there until you have problems with it, then cut it off and solder the wires together