Some guy was having Major fuel leak at fuel rail (on Facebook, Vanagon Owners Group); he had a mixture of Oetiker Clamps and smooth bodied screw clamps (had Video of fuel on rails coming out of somewhere), I thought you might have some thoughts as to my comment, I try to give good advice, lots of them are newcomers, but trying hard:

OK....here's my "opinion". Oetiker  Clamps were developed for fast, secure installation at the factory. Install, compress, done. But there is no allowance for the fact that over time rubber loses it's flex....in fact, it actually takes a set. So, for Fuel Injection hoses, it's my "opinion" those smooth sided screw clamps are a superior design (obviously not the slotted worm-drive clamps) in that they allow for snug up over the years. Regarding "springy" hose clamps on water hoses, these things ARE superior over slotted worm-drive clamps in that they are self-adjusting as rubber loses its flexibility. Still, with periodic attention, on water hoses with worm-drive clamps you can always snug up; the problem is, most folks don't and these are sometimes overlooked in hard to reach locations. Again, my "opinion".