Personally, I'd be wary of using that setup, for two reasons:
1. Having any rubber at all between the fuel pump and the carb isn't a good idea - it's under pressure, and rubber deteriorates with heat; there's a reason why all factory pump-to-carb lines are all-steel with SAE fittings at each end. Rubber hose on the engine under pressure is a fire hazard.
2. Those spring clamps are only used between the tank and the fuel pump, where the connecting hoses they're on are under a vacuum, not under pressure.