How likely is it for a petrol pump to push a full hose off the pump which is held on with jubilee clips?

I modified the fuel pump on my car because the fitted-for-life filter was full of junk and causing the car to struggle for power and i couldnt afford a new pump with the filter attached. I removed the old filter pipes and inatalled submersible fuel pipes with jubilee clips holding the pipes in place.

so far the car is running a lot better and i will be going on a road trip for 200 odd miles, the fuel line has fallen off before but it turned out i hadnt tightened it enough. I have now tightened it as much as possible, is the fuel line unlikely to come back off? Ive covered about 300 miles so far and its been fine.

Thanks